Product: Moulded

Rubber O-rings, standard and custom

Exonel moulds O-rings for static and dynamic sealing in standard and metric sizes, and in custom cross-sections to drawing. NBR is the default for oil and hydraulic duty. FKM, Silicone and EPDM cover heat, chemical and weather service.

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O-Rings made by Exonel Industries, Howrah, Kolkata, West Bengal

ProcessCompression moulding

SealingStatic and dynamic

SizesStandard and metric, custom to drawing

PolymersNBR, FKM, Silicone, EPDM, Neoprene

Figures are indicative and are confirmed for your application before tooling.

Material fit

Pick the compound for the seal.

NBR (Nitrile)

Mineral oil, fuel and hydraulic fluid. Covers most industrial sealing.

FKM (Viton-type)

Fuel, solvents and high heat.

Silicone (VMQ)

Static seals at high and low temperature. Food-contact and medical-application compounds on request.

EPDM

Water, steam, coolant and weather.

How we work

From size to seal.

Standard or custom

Standard cross-sections from existing tooling, or a custom diameter and section moulded to your drawing.

Compound and hardness

We recommend the polymer and Shore A hardness for your temperature, media and pressure.

Import replacement

Send the imported O-ring. We match the size and the material.

Standard range: AS568 sizes

AS568 O-ring size chart

Standard inch-series O-ring sizes to AS568: the 000, 100, 200, 300 and 400 series, 349 dash numbers in all. Order a standard O-ring by its dash number and the compound. Sizes are confirmed on request.

This chart covers the 000 to 400 series only. It does not include the 900 series.

Dash no.	ID (mm)	CS (mm)	OD (mm), derived	ID tol. (mm)	CS tol. (mm)	ID (in)	CS (in)
000 series: 1.78 mm cross-section (001 to 003 smaller)
001	0.74	1.02	2.77	±0.10	±0.08	0.029	0.040
002	1.07	1.27	3.61	±0.10	±0.08	0.042	0.050
003	1.42	1.52	4.47	±0.10	±0.08	0.056	0.060
004	1.78	1.78	5.33	±0.13	±0.08	0.070	0.070
005	2.57	1.78	6.12	±0.13	±0.08	0.101	0.070
006	2.90	1.78	6.45	±0.13	±0.08	0.114	0.070
007	3.68	1.78	7.24	±0.13	±0.08	0.145	0.070
008	4.47	1.78	8.03	±0.13	±0.08	0.176	0.070
009	5.28	1.78	8.84	±0.13	±0.08	0.208	0.070
010	6.07	1.78	9.63	±0.13	±0.08	0.239	0.070
011	7.65	1.78	11.20	±0.13	±0.08	0.301	0.070
012	9.25	1.78	12.80	±0.13	±0.08	0.364	0.070
013	10.82	1.78	14.38	±0.13	±0.08	0.426	0.070
014	12.42	1.78	15.98	±0.13	±0.08	0.489	0.070
015	14.00	1.78	17.55	±0.18	±0.08	0.551	0.070
016	15.60	1.78	19.15	±0.23	±0.08	0.614	0.070
017	17.17	1.78	20.73	±0.23	±0.08	0.676	0.070
018	18.77	1.78	22.33	±0.23	±0.08	0.739	0.070
019	20.35	1.78	23.90	±0.23	±0.08	0.801	0.070
020	21.95	1.78	25.50	±0.23	±0.08	0.864	0.070
021	23.52	1.78	27.08	±0.23	±0.08	0.926	0.070
022	25.12	1.78	28.68	±0.25	±0.08	0.989	0.070
023	26.70	1.78	30.25	±0.25	±0.08	1.051	0.070
024	28.30	1.78	31.85	±0.25	±0.08	1.114	0.070
025	29.87	1.78	33.43	±0.28	±0.08	1.176	0.070
026	31.47	1.78	35.03	±0.28	±0.08	1.239	0.070
027	33.05	1.78	36.60	±0.28	±0.08	1.301	0.070
028	34.65	1.78	38.20	±0.33	±0.08	1.364	0.070
029	37.82	1.78	41.38	±0.33	±0.08	1.489	0.070
030	41.00	1.78	44.55	±0.33	±0.08	1.614	0.070
031	44.17	1.78	47.73	±0.38	±0.08	1.739	0.070
032	47.35	1.78	50.90	±0.38	±0.08	1.864	0.070
033	50.52	1.78	54.08	±0.46	±0.08	1.989	0.070
034	53.70	1.78	57.25	±0.46	±0.08	2.114	0.070
035	56.87	1.78	60.43	±0.46	±0.08	2.239	0.070
036	60.05	1.78	63.60	±0.46	±0.08	2.364	0.070
037	63.22	1.78	66.78	±0.46	±0.08	2.489	0.070
038	66.40	1.78	69.95	±0.51	±0.08	2.614	0.070
039	69.57	1.78	73.13	±0.51	±0.08	2.739	0.070
040	72.75	1.78	76.30	±0.51	±0.08	2.864	0.070
041	75.92	1.78	79.48	±0.61	±0.08	2.989	0.070
042	82.27	1.78	85.83	±0.61	±0.08	3.239	0.070
043	88.62	1.78	92.18	±0.61	±0.08	3.489	0.070
044	94.97	1.78	98.53	±0.69	±0.08	3.739	0.070
045	101.32	1.78	104.88	±0.69	±0.08	3.989	0.070
046	107.67	1.78	111.23	±0.76	±0.08	4.239	0.070
047	114.02	1.78	117.58	±0.76	±0.08	4.489	0.070
048	120.37	1.78	123.93	±0.76	±0.08	4.739	0.070
049	126.72	1.78	130.28	±0.94	±0.08	4.989	0.070
050	133.07	1.78	136.63	±0.94	±0.08	5.239	0.070
100 series: 2.62 mm cross-section
102	1.24	2.62	6.48	±0.13	±0.08	0.049	0.103
103	2.06	2.62	7.29	±0.13	±0.08	0.081	0.103
104	2.84	2.62	8.08	±0.13	±0.08	0.112	0.103
105	3.63	2.62	8.86	±0.13	±0.08	0.143	0.103
106	4.42	2.62	9.65	±0.13	±0.08	0.174	0.103
107	5.23	2.62	10.46	±0.13	±0.08	0.206	0.103
108	6.02	2.62	11.25	±0.13	±0.08	0.237	0.103
109	7.59	2.62	12.83	±0.13	±0.08	0.299	0.103
110	9.19	2.62	14.43	±0.13	±0.08	0.362	0.103
111	10.77	2.62	16.00	±0.13	±0.08	0.424	0.103
112	12.37	2.62	17.60	±0.13	±0.08	0.487	0.103
113	13.94	2.62	19.18	±0.18	±0.08	0.549	0.103
114	15.54	2.62	20.78	±0.23	±0.08	0.612	0.103
115	17.12	2.62	22.35	±0.23	±0.08	0.674	0.103
116	18.72	2.62	23.95	±0.23	±0.08	0.737	0.103
117	20.29	2.62	25.53	±0.25	±0.08	0.799	0.103
118	21.89	2.62	27.13	±0.25	±0.08	0.862	0.103
119	23.47	2.62	28.70	±0.25	±0.08	0.924	0.103
120	25.07	2.62	30.30	±0.25	±0.08	0.987	0.103
121	26.64	2.62	31.88	±0.25	±0.08	1.049	0.103
122	28.24	2.62	33.48	±0.25	±0.08	1.112	0.103
123	29.82	2.62	35.05	±0.30	±0.08	1.174	0.103
124	31.42	2.62	36.65	±0.30	±0.08	1.237	0.103
125	32.99	2.62	38.23	±0.30	±0.08	1.299	0.103
126	34.59	2.62	39.83	±0.30	±0.08	1.362	0.103
127	36.17	2.62	41.40	±0.30	±0.08	1.424	0.103
128	37.77	2.62	43.00	±0.30	±0.08	1.487	0.103
129	39.34	2.62	44.58	±0.38	±0.08	1.549	0.103
130	40.94	2.62	46.18	±0.38	±0.08	1.612	0.103
131	42.52	2.62	47.75	±0.38	±0.08	1.674	0.103
132	44.12	2.62	49.35	±0.38	±0.08	1.737	0.103
133	45.69	2.62	50.93	±0.38	±0.08	1.799	0.103
134	47.29	2.62	52.53	±0.38	±0.08	1.862	0.103
135	48.90	2.62	54.13	±0.43	±0.08	1.925	0.103
136	50.47	2.62	55.70	±0.43	±0.08	1.987	0.103
137	52.07	2.62	57.30	±0.43	±0.08	2.050	0.103
138	53.64	2.62	58.88	±0.43	±0.08	2.112	0.103
139	55.25	2.62	60.48	±0.43	±0.08	2.175	0.103
140	56.82	2.62	62.05	±0.43	±0.08	2.237	0.103
141	58.42	2.62	63.65	±0.51	±0.08	2.300	0.103
142	59.99	2.62	65.23	±0.51	±0.08	2.362	0.103
143	61.60	2.62	66.83	±0.51	±0.08	2.425	0.103
144	63.17	2.62	68.40	±0.51	±0.08	2.487	0.103
145	64.77	2.62	70.00	±0.51	±0.08	2.550	0.103
146	66.34	2.62	71.58	±0.51	±0.08	2.612	0.103
147	67.95	2.62	73.18	±0.56	±0.08	2.675	0.103
148	69.52	2.62	74.75	±0.56	±0.08	2.737	0.103
149	71.12	2.62	76.35	±0.56	±0.08	2.800	0.103
150	72.69	2.62	77.93	±0.56	±0.08	2.862	0.103
151	75.87	2.62	81.10	±0.61	±0.08	2.987	0.103
152	82.22	2.62	87.45	±0.61	±0.08	3.237	0.103
153	88.57	2.62	93.80	±0.61	±0.08	3.487	0.103
154	94.92	2.62	100.15	±0.71	±0.08	3.737	0.103
155	101.27	2.62	106.50	±0.71	±0.08	3.987	0.103
156	107.62	2.62	112.85	±0.76	±0.08	4.237	0.103
157	113.97	2.62	119.20	±0.76	±0.08	4.487	0.103
158	120.32	2.62	125.55	±0.76	±0.08	4.737	0.103
159	126.67	2.62	131.90	±0.89	±0.08	4.987	0.103
160	133.02	2.62	138.25	±0.89	±0.08	5.237	0.103
161	139.37	2.62	144.60	±0.89	±0.08	5.487	0.103
162	145.72	2.62	150.95	±0.89	±0.08	5.737	0.103
163	152.07	2.62	157.30	±0.89	±0.08	5.987	0.103
164	158.42	2.62	163.65	±1.02	±0.08	6.237	0.103
165	164.77	2.62	170.00	±1.02	±0.08	6.487	0.103
166	171.12	2.62	176.35	±1.02	±0.08	6.737	0.103
167	177.47	2.62	182.70	±1.02	±0.08	6.987	0.103
168	183.82	2.62	189.05	±1.14	±0.08	7.237	0.103
169	190.17	2.62	195.40	±1.14	±0.08	7.487	0.103
170	196.52	2.62	201.75	±1.14	±0.08	7.737	0.103
171	202.87	2.62	208.10	±1.14	±0.08	7.987	0.103
172	209.22	2.62	214.45	±1.27	±0.08	8.237	0.103
173	215.57	2.62	220.80	±1.27	±0.08	8.487	0.103
174	221.92	2.62	227.15	±1.27	±0.08	8.737	0.103
175	228.27	2.62	233.50	±1.27	±0.08	8.987	0.103
176	234.62	2.62	239.85	±1.40	±0.08	9.237	0.103
177	240.97	2.62	246.20	±1.40	±0.08	9.487	0.103
178	247.32	2.62	252.55	±1.40	±0.08	9.737	0.103
200 series: 3.53 mm cross-section
201	4.34	3.53	11.40	±0.13	±0.10	0.171	0.139
202	5.94	3.53	13.00	±0.13	±0.10	0.234	0.139
203	7.52	3.53	14.58	±0.13	±0.10	0.296	0.139
204	9.12	3.53	16.18	±0.13	±0.10	0.359	0.139
205	10.69	3.53	17.75	±0.13	±0.10	0.421	0.139
206	12.29	3.53	19.35	±0.13	±0.10	0.484	0.139
207	13.87	3.53	20.93	±0.18	±0.10	0.546	0.139
208	15.47	3.53	22.53	±0.23	±0.10	0.609	0.139
209	17.04	3.53	24.10	±0.23	±0.10	0.671	0.139
210	18.64	3.53	25.70	±0.25	±0.10	0.734	0.139
211	20.22	3.53	27.28	±0.25	±0.10	0.796	0.139
212	21.82	3.53	28.88	±0.25	±0.10	0.859	0.139
213	23.39	3.53	30.45	±0.25	±0.10	0.921	0.139
214	24.99	3.53	32.05	±0.25	±0.10	0.984	0.139
215	26.57	3.53	33.63	±0.25	±0.10	1.046	0.139
216	28.17	3.53	35.23	±0.30	±0.10	1.109	0.139
217	29.74	3.53	36.80	±0.30	±0.10	1.171	0.139
218	31.34	3.53	38.40	±0.30	±0.10	1.234	0.139
219	32.92	3.53	39.98	±0.30	±0.10	1.296	0.139
220	34.52	3.53	41.58	±0.30	±0.10	1.359	0.139
221	36.09	3.53	43.15	±0.30	±0.10	1.421	0.139
222	37.69	3.53	44.75	±0.38	±0.10	1.484	0.139
223	40.87	3.53	47.93	±0.38	±0.10	1.609	0.139
224	44.04	3.53	51.10	±0.38	±0.10	1.734	0.139
225	47.22	3.53	54.28	±0.46	±0.10	1.859	0.139
226	50.39	3.53	57.45	±0.46	±0.10	1.984	0.139
227	53.57	3.53	60.63	±0.46	±0.10	2.109	0.139
228	56.74	3.53	63.80	±0.51	±0.10	2.234	0.139
229	59.92	3.53	66.98	±0.51	±0.10	2.359	0.139
230	63.09	3.53	70.15	±0.51	±0.10	2.484	0.139
231	66.27	3.53	73.33	±0.51	±0.10	2.609	0.139
232	69.44	3.53	76.50	±0.61	±0.10	2.734	0.139
233	72.62	3.53	79.68	±0.61	±0.10	2.859	0.139
234	75.79	3.53	82.85	±0.61	±0.10	2.984	0.139
235	78.97	3.53	86.03	±0.61	±0.10	3.109	0.139
236	82.14	3.53	89.20	±0.61	±0.10	3.234	0.139
237	85.32	3.53	92.38	±0.61	±0.10	3.359	0.139
238	88.49	3.53	95.55	±0.61	±0.10	3.484	0.139
239	91.67	3.53	98.73	±0.71	±0.10	3.609	0.139
240	94.84	3.53	101.90	±0.71	±0.10	3.734	0.139
241	98.02	3.53	105.08	±0.71	±0.10	3.859	0.139
242	101.19	3.53	108.25	±0.71	±0.10	3.984	0.139
243	104.37	3.53	111.43	±0.71	±0.10	4.109	0.139
244	107.54	3.53	114.60	±0.76	±0.10	4.234	0.139
245	110.72	3.53	117.78	±0.76	±0.10	4.359	0.139
246	113.89	3.53	120.95	±0.76	±0.10	4.484	0.139
247	117.07	3.53	124.13	±0.76	±0.10	4.609	0.139
248	120.24	3.53	127.30	±0.76	±0.10	4.734	0.139
249	123.42	3.53	130.48	±0.89	±0.10	4.859	0.139
250	126.59	3.53	133.65	±0.89	±0.10	4.984	0.139
251	129.77	3.53	136.83	±0.89	±0.10	5.109	0.139
252	132.94	3.53	140.00	±0.89	±0.10	5.234	0.139
253	136.12	3.53	143.18	±0.89	±0.10	5.359	0.139
254	139.29	3.53	146.35	±0.89	±0.10	5.484	0.139
255	142.47	3.53	149.53	±0.89	±0.10	5.609	0.139
256	145.64	3.53	152.70	±0.89	±0.10	5.734	0.139
257	148.82	3.53	155.88	±0.89	±0.10	5.859	0.139
258	151.99	3.53	159.05	±0.89	±0.10	5.984	0.139
259	158.34	3.53	165.40	±1.02	±0.10	6.234	0.139
260	164.69	3.53	171.75	±1.02	±0.10	6.484	0.139
261	171.04	3.53	178.10	±1.02	±0.10	6.734	0.139
262	177.39	3.53	184.45	±1.02	±0.10	6.984	0.139
263	183.74	3.53	190.80	±1.14	±0.10	7.234	0.139
264	190.09	3.53	197.15	±1.14	±0.10	7.484	0.139
265	196.44	3.53	203.50	±1.14	±0.10	7.734	0.139
266	202.79	3.53	209.85	±1.14	±0.10	7.984	0.139
267	209.14	3.53	216.20	±1.27	±0.10	8.234	0.139
268	215.49	3.53	222.55	±1.27	±0.10	8.484	0.139
269	221.84	3.53	228.90	±1.27	±0.10	8.734	0.139
270	228.19	3.53	235.25	±1.27	±0.10	8.984	0.139
271	234.54	3.53	241.60	±1.40	±0.10	9.234	0.139
272	240.89	3.53	247.95	±1.40	±0.10	9.484	0.139
273	247.24	3.53	254.30	±1.40	±0.10	9.734	0.139
274	253.59	3.53	260.65	±1.40	±0.10	9.984	0.139
275	266.29	3.53	273.35	±1.40	±0.10	10.484	0.139
276	278.99	3.53	286.05	±1.65	±0.10	10.984	0.139
277	291.69	3.53	298.75	±1.65	±0.10	11.484	0.139
278	304.39	3.53	311.45	±1.65	±0.10	11.984	0.139
279	329.79	3.53	336.85	±1.65	±0.10	12.984	0.139
280	355.19	3.53	362.25	±1.65	±0.10	13.984	0.139
281	380.59	3.53	387.65	±1.65	±0.10	14.984	0.139
282	405.26	3.53	412.32	±1.91	±0.10	15.955	0.139
283	430.66	3.53	437.72	±2.03	±0.10	16.955	0.139
284	456.06	3.53	463.12	±2.16	±0.10	17.955	0.139
300 series: 5.33 mm cross-section
309	10.46	5.33	21.13	±0.13	±0.13	0.412	0.210
310	12.07	5.33	22.73	±0.13	±0.13	0.475	0.210
311	13.64	5.33	24.31	±0.18	±0.13	0.537	0.210
312	15.24	5.33	25.91	±0.23	±0.13	0.600	0.210
313	16.81	5.33	27.48	±0.23	±0.13	0.662	0.210
314	18.42	5.33	29.08	±0.25	±0.13	0.725	0.210
315	19.99	5.33	30.66	±0.25	±0.13	0.787	0.210
316	21.59	5.33	32.26	±0.25	±0.13	0.850	0.210
317	23.16	5.33	33.83	±0.25	±0.13	0.912	0.210
318	24.77	5.33	35.43	±0.25	±0.13	0.975	0.210
319	26.34	5.33	37.01	±0.25	±0.13	1.037	0.210
320	27.94	5.33	38.61	±0.30	±0.13	1.100	0.210
321	29.51	5.33	40.18	±0.30	±0.13	1.162	0.210
322	31.12	5.33	41.78	±0.30	±0.13	1.225	0.210
323	32.69	5.33	43.36	±0.30	±0.13	1.287	0.210
324	34.29	5.33	44.96	±0.30	±0.13	1.350	0.210
325	37.47	5.33	48.13	±0.38	±0.13	1.475	0.210
326	40.64	5.33	51.31	±0.38	±0.13	1.600	0.210
327	43.82	5.33	54.48	±0.38	±0.13	1.725	0.210
328	46.99	5.33	57.66	±0.38	±0.13	1.850	0.210
329	50.17	5.33	60.83	±0.46	±0.13	1.975	0.210
330	53.34	5.33	64.01	±0.46	±0.13	2.100	0.210
331	56.52	5.33	67.18	±0.46	±0.13	2.225	0.210
332	59.69	5.33	70.36	±0.46	±0.13	2.350	0.210
333	62.87	5.33	73.53	±0.51	±0.13	2.475	0.210
334	66.04	5.33	76.71	±0.51	±0.13	2.600	0.210
335	69.22	5.33	79.88	±0.51	±0.13	2.725	0.210
336	72.39	5.33	83.06	±0.51	±0.13	2.850	0.210
337	75.57	5.33	86.23	±0.61	±0.13	2.975	0.210
338	78.74	5.33	89.41	±0.61	±0.13	3.100	0.210
339	81.92	5.33	92.58	±0.61	±0.13	3.225	0.210
340	85.09	5.33	95.76	±0.61	±0.13	3.350	0.210
341	88.27	5.33	98.93	±0.61	±0.13	3.475	0.210
342	91.44	5.33	102.11	±0.71	±0.13	3.600	0.210
343	94.62	5.33	105.28	±0.71	±0.13	3.725	0.210
344	97.79	5.33	108.46	±0.71	±0.13	3.850	0.210
345	100.97	5.33	111.63	±0.71	±0.13	3.975	0.210
346	104.14	5.33	114.81	±0.71	±0.13	4.100	0.210
347	107.32	5.33	117.98	±0.76	±0.13	4.225	0.210
348	110.49	5.33	121.16	±0.76	±0.13	4.350	0.210
349	113.67	5.33	124.33	±0.76	±0.13	4.475	0.210
350	116.84	5.33	127.51	±0.76	±0.13	4.600	0.210
351	120.02	5.33	130.68	±0.76	±0.13	4.725	0.210
352	123.19	5.33	133.86	±0.76	±0.13	4.850	0.210
353	126.37	5.33	137.03	±0.94	±0.13	4.975	0.210
354	129.54	5.33	140.21	±0.94	±0.13	5.100	0.210
355	132.72	5.33	143.38	±0.94	±0.13	5.225	0.210
356	135.89	5.33	146.56	±0.94	±0.13	5.350	0.210
357	139.07	5.33	149.73	±0.94	±0.13	5.475	0.210
358	142.24	5.33	152.91	±0.94	±0.13	5.600	0.210
359	145.42	5.33	156.08	±0.94	±0.13	5.725	0.210
360	148.59	5.33	159.26	±0.94	±0.13	5.850	0.210
361	151.77	5.33	162.43	±0.94	±0.13	5.975	0.210
362	158.12	5.33	168.78	±1.02	±0.13	6.225	0.210
363	164.47	5.33	175.13	±1.02	±0.13	6.475	0.210
364	170.82	5.33	181.48	±1.02	±0.13	6.725	0.210
365	177.17	5.33	187.83	±1.02	±0.13	6.975	0.210
366	183.52	5.33	194.18	±1.14	±0.13	7.225	0.210
367	189.87	5.33	200.53	±1.14	±0.13	7.475	0.210
368	196.22	5.33	206.88	±1.14	±0.13	7.725	0.210
369	202.57	5.33	213.23	±1.14	±0.13	7.975	0.210
370	208.92	5.33	219.58	±1.27	±0.13	8.225	0.210
371	215.27	5.33	225.93	±1.27	±0.13	8.475	0.210
372	221.62	5.33	232.28	±1.27	±0.13	8.725	0.210
373	227.97	5.33	238.63	±1.27	±0.13	8.975	0.210
374	234.32	5.33	244.98	±1.40	±0.13	9.225	0.210
375	240.67	5.33	251.33	±1.40	±0.13	9.475	0.210
376	247.02	5.33	257.68	±1.40	±0.13	9.725	0.210
377	253.37	5.33	264.03	±1.40	±0.13	9.975	0.210
378	266.07	5.33	276.73	±1.52	±0.13	10.475	0.210
379	278.77	5.33	289.43	±1.52	±0.13	10.975	0.210
380	291.47	5.33	302.13	±1.65	±0.13	11.475	0.210
381	304.17	5.33	314.83	±1.65	±0.13	11.975	0.210
382	329.57	5.33	340.23	±1.65	±0.13	12.975	0.210
383	354.97	5.33	365.63	±1.78	±0.13	13.975	0.210
384	380.37	5.33	391.03	±1.78	±0.13	14.975	0.210
385	405.26	5.33	415.93	±1.91	±0.13	15.955	0.210
386	430.66	5.33	441.33	±2.03	±0.13	16.955	0.210
387	456.06	5.33	466.73	±2.16	±0.13	17.955	0.210
388	481.46	5.33	492.13	±2.29	±0.13	18.955	0.210
389	506.86	5.33	517.53	±2.41	±0.13	19.955	0.210
390	532.26	5.33	542.93	±2.41	±0.13	20.955	0.210
391	557.66	5.33	568.33	±2.54	±0.13	21.955	0.210
392	582.68	5.33	593.34	±2.67	±0.13	22.940	0.210
393	608.08	5.33	618.74	±2.79	±0.13	23.940	0.210
394	633.48	5.33	644.14	±2.92	±0.13	24.940	0.210
395	658.88	5.33	669.54	±3.05	±0.13	25.940	0.210
400 series: 6.99 mm cross-section
425	113.67	6.99	127.64	±0.84	±0.15	4.475	0.275
426	116.84	6.99	130.81	±0.84	±0.15	4.600	0.275
427	120.02	6.99	133.99	±0.84	±0.15	4.725	0.275
428	123.19	6.99	137.16	±0.84	±0.15	4.850	0.275
429	126.37	6.99	140.34	±0.94	±0.15	4.975	0.275
430	129.54	6.99	143.51	±0.94	±0.15	5.100	0.275
431	132.72	6.99	146.69	±0.94	±0.15	5.225	0.275
432	135.89	6.99	149.86	±0.94	±0.15	5.350	0.275
433	139.07	6.99	153.04	±0.94	±0.15	5.475	0.275
434	142.24	6.99	156.21	±0.94	±0.15	5.600	0.275
435	145.42	6.99	159.39	±0.94	±0.15	5.725	0.275
436	148.59	6.99	162.56	±0.94	±0.15	5.850	0.275
437	151.77	6.99	165.74	±0.94	±0.15	5.975	0.275
438	158.12	6.99	172.09	±1.02	±0.15	6.225	0.275
439	164.47	6.99	178.44	±1.02	±0.15	6.475	0.275
440	170.82	6.99	184.79	±1.02	±0.15	6.725	0.275
441	177.17	6.99	191.14	±1.02	±0.15	6.975	0.275
442	183.52	6.99	197.49	±1.14	±0.15	7.225	0.275
443	189.87	6.99	203.84	±1.14	±0.15	7.475	0.275
444	196.22	6.99	210.19	±1.14	±0.15	7.725	0.275
445	202.57	6.99	216.54	±1.14	±0.15	7.975	0.275
446	215.27	6.99	229.24	±1.40	±0.15	8.475	0.275
447	227.97	6.99	241.94	±1.40	±0.15	8.975	0.275
448	240.67	6.99	254.64	±1.40	±0.15	9.475	0.275
449	253.37	6.99	267.34	±1.40	±0.15	9.975	0.275
450	266.07	6.99	280.04	±1.52	±0.15	10.475	0.275
451	278.77	6.99	292.74	±1.52	±0.15	10.975	0.275
452	291.47	6.99	305.44	±1.52	±0.15	11.475	0.275
453	304.17	6.99	318.14	±1.52	±0.15	11.975	0.275
454	316.87	6.99	330.84	±1.52	±0.15	12.475	0.275
455	329.57	6.99	343.54	±1.52	±0.15	12.975	0.275
456	342.27	6.99	356.24	±1.78	±0.15	13.475	0.275
457	354.97	6.99	368.94	±1.78	±0.15	13.975	0.275
458	367.67	6.99	381.64	±1.78	±0.15	14.475	0.275
459	380.37	6.99	394.34	±1.78	±0.15	14.975	0.275
460	393.07	6.99	407.04	±1.78	±0.15	15.475	0.275
461	405.26	6.99	419.23	±1.91	±0.15	15.955	0.275
462	417.96	6.99	431.93	±1.91	±0.15	16.455	0.275
463	430.66	6.99	444.63	±2.03	±0.15	16.955	0.275
464	443.36	6.99	457.33	±2.16	±0.15	17.455	0.275
465	456.06	6.99	470.03	±2.16	±0.15	17.955	0.275
466	468.76	6.99	482.73	±2.16	±0.15	18.455	0.275
467	481.46	6.99	495.43	±2.29	±0.15	18.955	0.275
468	494.16	6.99	508.13	±2.29	±0.15	19.455	0.275
469	506.86	6.99	520.83	±2.41	±0.15	19.955	0.275
470	532.26	6.99	546.23	±2.41	±0.15	20.955	0.275
471	557.66	6.99	571.63	±2.54	±0.15	21.955	0.275
472	582.68	6.99	596.65	±2.67	±0.15	22.940	0.275
473	608.08	6.99	622.05	±2.79	±0.15	23.940	0.275
474	633.48	6.99	647.45	±2.92	±0.15	24.940	0.275
475	658.88	6.99	672.85	±3.05	±0.15	25.940	0.275

ID = inside diameter. CS = cross-section. OD is derived (ID + 2 × CS) and is not itself an AS568 figure. Tolerances are plus or minus (±) the value shown.

Source for every ID, cross-section and tolerance: Parker O-Ring Handbook, Parker Series 2-XXX O-Ring Sizes (per AS568A). Each row was cross-checked against the Global O-Ring and Seal AS568 size chart.

Need a standard O-ring kit or box instead? See O-ring kits and boxes.

FAQ

Common questions

What is the most common O-ring material?

Nitrile (NBR). It handles oil, fuel and hydraulic fluid and covers most industrial applications. FKM or silicone are used where heat or chemicals go beyond what NBR handles.

Can you make a non-standard O-ring size?

Yes. Beyond standard sizes we mould custom diameters and cross-sections to your drawing.

Which O-ring resists oil and fuel best?

NBR for general oil and fuel. FKM where the temperature or the chemical is more aggressive.

Need O-rings in a specific size or compound?

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About Exonel Industries

Exonel Industries makes custom moulded and extruded rubber components in Howrah, Kolkata, West Bengal, and supplies manufacturers across India. We work in six base polymers, Silicone, EPDM, FKM, NBR, Neoprene and SBR, formulated into hundreds of compounds. Compounding, tooling and production are done in-house. Send a drawing, a sample or a specification for a quote.

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