X-Ring Standard Size Charts

Rubber X-ring Quad Ring is a kind of rubber seals with multiple sealing lips, its unique star-shaped cross-section design makes it better than traditional O-rings in terms of sealing performance, pressure resistance and extrusion resistance. Rubber star ring is widely used in various industrial fields, such as automotive manufacturing, machinery and equipment, petrochemical, aerospace, etc., for static and dynamic sealing.

AS568	Nominal Size in Inches			Actual Size in Inches			Metric Size in Millimeters			Add to Cart
Dash No.	ID (inch)	OD (inch)	CS (inch)	ID (inch)	OD (inch)	CS (inch)	ID (inch)	OD (inch)	CS (inch)

001	1/32	3/32	1/32	0.029	0.109	0.040	0.74	2.78	1.02	Get a Quote
002	3/64	9/64	3/64	0.042	0.142	0.050	1.07	3.61	1.27	Get a Quote
003	1/16	3/16	1/16	0.056	0.176	0.060	1.42	4.46	1.52	Get a Quote
004	5/64	13/64	1/16	0.070	0.210	0.070	1.78	5.34	1.78	Get a Quote
005	3/32	7/32	1/16	0.101	0.241	0.070	2.57	6.13	1.78	Get a Quote
006	1/8	1/4	1/16	0.114	0.254	0.070	2.90	6.46	1.78	Get a Quote
007	5/32	9/32	1/16	0.145	0.285	0.070	3.68	7.24	1.78	Get a Quote
008	3/16	5/16	1/16	0.176	0.316	0.070	4.47	8.03	1.78	Get a Quote
009	7/32	11/32	1/16	0.208	0.348	0.070	5.28	8.84	1.78	Get a Quote
010	1/4	3/8	1/16	0.239	0.379	0.070	6.07	9.63	1.78	Get a Quote
011	5/16	7/16	1/16	0.301	0.441	0.070	7.65	11.21	1.78	Get a Quote
012	3/8	1/2	1/16	0.364	0.504	0.070	9.25	12.81	1.78	Get a Quote
013	7/16	9/16	1/16	0.426	0.566	0.070	10.82	14.38	1.78	Get a Quote
014	1/2	5/8	1/16	0.489	0.629	0.070	12.42	15.98	1.78	Get a Quote
015	9/16	11/16	1/16	0.551	0.691	0.070	14.00	17.56	1.78	Get a Quote
016	5/8	3/4	1/16	0.614	0.754	0.070	15.60	19.16	1.78	Get a Quote
017	11/16	13/16	1/16	0.676	0.816	0.070	17.17	20.73	1.78	Get a Quote
018	3/4	7/8	1/16	0.739	0.879	0.070	18.77	22.33	1.78	Get a Quote
019	13/16	15/16	1/16	0.801	0.941	0.070	20.35	23.91	1.78	Get a Quote
020	7/8	1	1/16	0.864	1.004	0.070	21.95	25.51	1.78	Get a Quote
021	15/16	1-1/16	1/16	0.926	1.066	0.070	23.52	27.08	1.78	Get a Quote
022	1	1-1/8	1/16	0.989	1.129	0.070	25.12	28.68	1.78	Get a Quote
023	1-1/16	1-3/16	1/16	1.051	1.191	0.070	26.70	30.26	1.78	Get a Quote
024	1-1/8	1-1/4	1/16	1.114	1.254	0.070	28.30	31.86	1.78	Get a Quote
025	1-3/16	1-5/16	1/16	1.176	1.316	0.070	29.87	33.43	1.78	Get a Quote
026	1-1/4	1-3/8	1/16	1.239	1.379	0.070	31.47	35.03	1.78	Get a Quote
027	1-5/16	1-7/16	1/16	1.301	1.441	0.070	33.05	36.61	1.78	Get a Quote
028	1-3/8	1-1/2	1/16	1.364	1.504	0.070	34.65	38.21	1.78	Get a Quote
029	1-1/2	1-5/8	1/16	1.489	1.629	0.070	37.82	41.38	1.78	Get a Quote
030	1-5/8	1-3/4	1/16	1.614	1.754	0.070	41.00	44.56	1.78	Get a Quote
031	1-3/4	1-7/8	1/16	1.739	1.879	0.070	44.17	47.73	1.78	Get a Quote
032	1-7/8	2	1/16	1.864	2.004	0.070	47.35	50.91	1.78	Get a Quote
033	2	2-1/8	1/16	1.989	2.129	0.070	50.52	54.08	1.78	Get a Quote
034	2-1/8	2-1/4	1/16	2.114	2.254	0.070	53.70	57.26	1.78	Get a Quote
035	2-1/4	2-3/8	1/16	2.239	2.379	0.070	56.87	60.43	1.78	Get a Quote
036	2-3/8	2-1/2	1/16	2.364	2.504	0.070	60.05	63.61	1.78	Get a Quote
037	2-1/2	2-5/8	1/16	2.489	2.629	0.070	63.22	66.78	1.78	Get a Quote
038	2-5/8	2-3/4	1/16	2.614	2.754	0.070	66.40	69.96	1.78	Get a Quote
039	2-3/4	2-7/8	1/16	2.739	2.879	0.070	69.57	73.13	1.78	Get a Quote
040	2-7/8	3	1/16	2.864	3.004	0.070	72.75	76.31	1.78	Get a Quote
041	3	3-1/8	1/16	2.989	3.129	0.070	75.92	79.48	1.78	Get a Quote
042	3-1/4	3-3/8	1/16	3.239	3.379	0.070	82.27	85.83	1.78	Get a Quote
043	3-1/2	3-5/8	1/16	3.489	3.629	0.070	88.62	92.18	1.78	Get a Quote
044	3-3/4	3-7/8	1/16	3.739	3.879	0.070	94.97	98.53	1.78	Get a Quote
045	4	4-1/8	1/16	3.989	4.129	0.070	101.32	104.88	1.78	Get a Quote
046	4-1/4	4-3/8	1/16	4.239	4.379	0.070	107.67	111.23	1.78	Get a Quote
047	4-1/2	4-5/8	1/16	4.489	4.629	0.070	114.02	117.58	1.78	Get a Quote
048	4-3/4	4-7/8	1/16	4.739	4.879	0.070	120.37	123.93	1.78	Get a Quote
049	5	5-1/8	1/16	4.989	5.129	0.070	126.72	130.28	1.78	Get a Quote
050	5-1/4	5-3/8	1/16	5.239	5.379	0.070	133.07	136.63	1.78	Get a Quote
102	1/16	1/4	3/32	0.049	0.255	0.103	1.24	6.48	2.62	Get a Quote
103	3/32	9/32	3/32	0.081	0.287	0.103	2.06	7.30	2.62	Get a Quote
104	1/8	5/16	3/32	0.112	0.318	0.103	2.84	8.08	2.62	Get a Quote
105	5/32	11/32	3/32	0.143	0.349	0.103	3.63	8.87	2.62	Get a Quote
106	3/16	3/8	3/32	0.174	0.380	0.103	4.42	9.66	2.62	Get a Quote
107	7/32	13/32	3/32	0.206	0.412	0.103	5.23	10.47	2.62	Get a Quote
108	1/4	7/16	3/32	0.237	0.443	0.103	6.02	11.26	2.62	Get a Quote
109	5/16	1/2	3/32	0.299	0.505	0.103	7.59	12.83	2.62	Get a Quote
110	3/8	9/16	3/32	0.362	0.568	0.103	9.19	14.43	2.62	Get a Quote
111	7/16	5/8	3/32	0.424	0.630	0.103	10.77	16.01	2.62	Get a Quote
112	1/2	11/16	3/32	0.487	0.693	0.103	12.37	17.61	2.62	Get a Quote
113	9/16	3/4	3/32	0.549	0.755	0.103	13.94	19.18	2.62	Get a Quote
114	5/8	13/16	3/32	0.612	0.818	0.103	15.54	20.78	2.62	Get a Quote
115	11/16	7/8	3/32	0.674	0.880	0.103	17.12	22.36	2.62	Get a Quote
116	3/4	15/16	3/32	0.737	0.943	0.103	18.72	23.96	2.62	Get a Quote
117	13/16	1	3/32	0.799	1.005	0.103	20.29	25.54	2.62	Get a Quote
118	7/8	1-1/16	3/32	0.862	1.068	0.103	21.89	27.13	2.62	Get a Quote
119	15/16	1-1/8	3/32	0.924	1.130	0.103	23.47	28.71	2.62	Get a Quote
120	1	1-3/16	3/32	0.987	1.193	0.103	25.07	30.31	2.62	Get a Quote
121	1-1/16	1-1/4	3/32	1.049	1.255	0.103	26.64	31.88	2.62	Get a Quote
122	1-1/8	1-5/16	3/32	1.112	1.318	0.103	28.24	33.48	2.62	Get a Quote
123	1-3/16	1-3/8	3/32	1.174	1.380	0.103	29.82	35.06	2.62	Get a Quote

If you'd like to discuss your specialty application with a product expert, please contact our CBD SEALS Team：sale@bdseals.com

Features

Excellent sealing performance: Multiple sealing lip design provides multiple seals to effectively prevent leakage.

High pressure resistance: Star-shaped cross-section structure, able to withstand higher pressure, suitable for high-pressure environments.

Good resistance to extrusion: Unique cross-section shape effectively prevents extrusion under high pressure.

Abrasion and ageing resistance: High quality rubber materials are selected, with good abrasion and ageing resistance.

Various materials available: Different rubber materials can be selected according to different application environments, such as:

Nitrile Rubber (NBR): Oil, abrasion and heat resistant, suitable for general industrial applications.

Fluoroelastomer (FKM): High temperature and chemical resistant, suitable for harsh environments.

Silicone Rubber (VMQ): Resistant to high and low temperatures, ozone resistant, suitable for food, medical and other industries.

Hydrogenated Nitrile Butadiene Rubber (HNBR): High temperature, oil and chemical resistant, suitable for high performance applications.

Various sizes: Rubber star rings can be customised according to customer requirements.

X-Ring Standard Size Charts

AS-568 USA Standard O-ring Size Chart

Universal Standard O-ring Size Chart

Common Metric Standard O-ring Size Chart

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