Quad Rings, also named X-Rings or XRings, deliver multiple superior performance benefits compared with conventional toroidal O-Rings for hydraulic and pneumatic sealing jobs.

Thanks to its unique square-style cross-section profile, the Quad Ring effectively eliminates roll or twisting inside seal grooves and avoids common spiral failure issues that frequently occur on standard O-Ring products during reciprocating and rotary shaft movement.

Designed with four rounded sealing lips, X-Ring / Quad Ring achieves outstanding sealing performance while needing lower compression clamping force and generating reduced running friction.

Recessed channels between every pair of sealing lips can stably store lubricant oil or grease, cutting breakout starting friction, smoothing equipment startup and greatly lowering component abrasion and service wear.

Another core merit of Quad Ring (X-Ring) is concealed mold parting lines. Different from regular O-Rings with exposed flash burrs on sealing surfaces, all mold flashing of Quad Rings sits inside the lip intermediate grooves without touching the mating sealing face, helping boost sealing stability and prolong seal service life.

See below for our available sizing.

0.070″ (1/16″ Nominal) 1.78mm Cross Section

Size Reference	ID (nom)	OD (nom)	CS (nom)	ID (inch)	±	CS (inch)	±	ID (mm)	±	CS (mm)	±
001	1/32	3/32	1/32	.029	.004	.040	.003	0.74	0.10	1.02	0.08
002	3/64	9/64	3/64	.042	.004	.050	.003	1.07	0.10	1.27	0.08
003	1/16	3/16	1/16	.056	.004	.060	.003	1.42	0.10	1.52	0.08
004	5/64	13/64	1/16	.070	.005	.070	.003	1.78	0.13	1.78	0.08
005	3/32	7/32	1/16	.101	.005	.070	.003	2.57	0.13	1.78	0.08
006	1/8	1/4	1/16	.114	.005	.070	.003	2.90	0.13	1.78	0.08
007	5/32	9/32	1/16	.145	.005	.070	.003	3.68	0.13	1.78	0.08
008	3/16	5/16	1/16	.176	.005	.070	.003	4.47	0.13	1.78	0.08
009	7/32	11/32	1/16	.208	.005	.070	.003	5.28	0.13	1.78	0.08
010	1/4	3/8	1/16	.239	.005	.070	.003	6.07	0.13	1.78	0.08
011	5/16	7/16	1/16	.301	.005	.070	.003	7.65	0.13	1.78	0.08
012	3/8	1/2	1/16	.364	.005	.070	.003	9.25	0.13	1.78	0.08
013	7/16	9/16	1/16	.426	.005	.070	.003	10.82	0.13	1.78	0.08
014	1/2	5/8	1/16	.489	.005	.070	.003	12.42	0.13	1.78	0.08
015	9/16	11/16	1/16	.551	.007	.070	.003	14.00	0.18	1.78	0.08
016	5/8	3/4	1/16	.614	.009	.070	.003	15.60	0.23	1.78	0.08
017	11/16	13/16	1/16	.676	.009	.070	.003	17.17	0.23	1.78	0.08
018	3/4	7/8	1/16	.739	.009	.070	.003	18.77	0.23	1.78	0.08
019	13/16	15/16	1/16	.801	.009	.070	.003	20.35	0.23	1.78	0.08
020	7/8	1	1/16	.864	.009	.070	.003	21.95	0.23	1.78	0.08
021	15/16	1-1/16	1/16	.926	.009	.070	.003	23.52	0.23	1.78	0.08
022	1	1-1/8	1/16	.989	.010	.070	.003	25.12	0.25	1.78	0.08
023	1-1/16	1-3/16	1/16	1.051	.010	.070	.003	26.70	0.25	1.78	0.08
024	1-1/8	1-1/4	1/16	1.114	.010	.070	.003	28.30	0.25	1.78	0.08
025	1-3/16	1-5/16	1/16	1.176	.011	.070	.003	29.87	0.28	1.78	0.08
026	1-1/4	1-3/8	1/16	1.239	.011	.070	.003	31.47	0.28	1.78	0.08
027	1-5/16	1-7/16	1/16	1.301	.011	.070	.003	33.05	0.28	1.78	0.08
028	1-3/8	1-1/2	1/16	1.364	.013	.070	.003	34.65	0.33	1.78	0.08
029	1-1/2	1-5/8	1/16	1.489	.013	.070	.003	37.82	0.33	1.78	0.08
030	1-5/8	1-3/4	1/16	1.614	.013	.070	.003	41.00	0.33	1.78	0.08
031	1-3/4	1-7/8	1/16	1.739	.015	.070	.003	44.17	0.38	1.78	0.08
032	1-7/8	2	1/16	1.864	.015	.070	.003	47.35	0.38	1.78	0.08
033	2	2-1/8	1/16	1.989	.018	.070	.003	50.52	0.46	1.78	0.08
034	2-1/8	2-1/4	1/16	2.114	.018	.070	.003	53.70	0.46	1.78	0.08
035	2-1/4	2-3/8	1/16	2.239	.018	.070	.003	56.87	0.46	1.78	0.08
036	2-3/8	2-1/2	1/16	2.364	.018	.070	.003	60.05	0.46	1.78	0.08
037	2-1/2	2-5/8	1/16	2.489	.018	.070	.003	63.22	0.46	1.78	0.08
038	2-5/8	2-3/4	1/16	2.614	.020	.070	.003	66.40	0.51	1.78	0.08
039	2-3/4	2-7/8	1/16	2.739	.020	.070	.003	69.57	0.51	1.78	0.08
040	2-7/8	3	1/16	2.864	.020	.070	.003	72.75	0.51	1.78	0.08
041	3	3-1/8	1/16	2.989	.024	.070	.003	75.92	0.61	1.78	0.08
042	3-1/4	3-3/8	1/16	3.239	.024	.070	.003	82.27	0.61	1.78	0.08
043	3-1/2	3-5/8	1/16	3.489	.024	.070	.003	88.62	0.61	1.78	0.08
044	3-3/4	3-7/8	1/16	3.739	.027	.070	.003	94.97	0.69	1.78	0.08
045	4	4-1/8	1/16	3.989	.027	.070	.003	101.32	0.69	1.78	0.08
046	4-1/4	4-3/8	1/16	4.239	.030	.070	.003	107.67	0.76	1.78	0.08
047	4-1/2	4-5/8	1/16	4.489	.030	.070	.003	114.02	0.76	1.78	0.08
048	4-3/4	4-7/8	1/16	4.739	.030	.070	.003	120.37	0.76	1.78	0.08
049	5	5-1/8	1/16	4.989	.037	.070	.003	126.72	0.94	1.78	0.08
050	5-1/4	5-3/8	1/16	5.239	.037	.070	.003	133.07	0.94	1.78	0.08

0.103” (3/32″ Nominal) 2.62mm Cross Section

Size Reference	ID (nom)	OD (nom)	CS (nom)	ID (inch)	±	CS (inch)	±	ID (mm)	±	CS (mm)	±
102	1/16	1/4	3/32	.049	.005	.103	.003	1.24	0.13	2.62	0.08
103	3/32	9/32	3/32	.081	.005	.103	.003	2.06	0.13	2.62	0.08
104	1/8	5/16	3/32	.112	.005	.103	.003	2.84	0.13	2.62	0.08
105	5/32	11/32	3/32	.143	.005	.103	.003	3.63	0.13	2.62	0.08
106	3/16	3/8	3/32	.174	.005	.103	.003	4.42	0.13	2.62	0.08
107	7/32	13/32	3/32	.206	.005	.103	.003	5.23	0.13	2.62	0.08
108	1/4	7/16	3/32	.237	.005	.103	.003	6.02	0.13	2.62	0.08
109	5/16	1/2	3/32	.299	.005	.103	.003	7.59	0.13	2.62	0.08
110	3/8	9/16	3/32	.362	.005	.103	.003	9.19	0.13	2.62	0.08
111	7/16	5/8	3/32	.424	.005	.103	.003	10.77	0.13	2.62	0.08
112	1/2	11/16	3/32	.487	.005	.103	.003	12.37	0.13	2.62	0.08
113	9/16	3/4	3/32	.549	.007	.103	.003	13.94	0.18	2.62	0.08
114	5/8	13/16	3/32	.612	.009	.103	.003	15.54	0.23	2.62	0.08
115	11/16	7/8	3/32	.674	.009	.103	.003	17.12	0.23	2.62	0.08
116	3/4	15/16	3/32	.737	.009	.103	.003	18.72	0.23	2.62	0.08
117	13/16	1	3/32	.799	.010	.103	.003	20.29	0.25	2.62	0.08
118	7/8	1-1/16	3/32	.862	.010	.103	.003	21.89	0.25	2.62	0.08
119	15/16	1-1/8	3/32	.924	.010	.103	.003	23.47	0.25	2.62	0.08
120	1	1-3/16	3/32	.987	.010	.103	.003	25.07	0.25	2.62	0.08
121	1-1/16	1-1/4	3/32	1.049	.010	.103	.003	26.64	0.25	2.62	0.08
122	1-1/8	1-5/16	3/32	1.112	.010	.103	.003	28.24	0.25	2.62	0.08
123	1-3/16	1-3/8	3/32	1.174	.012	.103	.003	29.82	0.30	2.62	0.08
124	1-1/4	1-7/16	3/32	1.237	.012	.103	.003	31.42	0.30	2.62	0.08
125	1-5/16	1-1/2	3/32	1.299	.012	.103	.003	32.99	0.30	2.62	0.08
126	1-3/8	1-9/16	3/32	1.362	.012	.103	.003	34.59	0.30	2.62	0.08
127	1-7/16	1-5/8	3/32	1.424	.012	.103	.003	36.17	0.30	2.62	0.08
128	1-1/2	1-11/16	3/32	1.487	.012	.103	.003	37.77	0.30	2.62	0.08
129	1-9/16	1-3/4	3/32	1.549	.015	.103	.003	39.34	0.38	2.62	0.08
130	1-5/8	1-13/16	3/32	1.612	.015	.103	.003	40.94	0.38	2.62	0.08
131	1-11/16	1-7/8	3/32	1.674	.015	.103	.003	42.52	0.38	2.62	0.08
132	1-3/4	1-15/16	3/32	1.737	.015	.103	.003	44.12	0.38	2.62	0.08
133	1-13/16	2	3/32	1.799	.015	.103	.003	45.69	0.38	2.62	0.08
134	1-7/8	2-1/16	3/32	1.862	.015	.103	.003	47.29	0.38	2.62	0.08
135	1-15/16	2-1/8	3/32	1.925	.017	.103	.003	48.90	0.43	2.62	0.08
136	2	2-3/16	3/32	1.987	.017	.103	.003	50.47	0.43	2.62	0.08
137	2-1/16	2-1/4	3/32	2.050	.017	.103	.003	52.07	0.43	2.62	0.08
138	2-1/8	2-5/16	3/32	2.112	.017	.103	.003	53.64	0.43	2.62	0.08
139	2-3/16	2-3/8	3/32	2.175	.017	.103	.003	55.25	0.43	2.62	0.08
140	2-1/4	2-7/16	3/32	2.237	.017	.103	.003	56.82	0.43	2.62	0.08
141	2-5/16	2-1/2	3/32	2.300	.020	.103	.003	58.42	0.51	2.62	0.08
142	2-3/8	2-9/16	3/32	2.362	.020	.103	.003	59.99	0.51	2.62	0.08
143	2-7/16	2-5/8	3/32	2.425	.020	.103	.003	61.60	0.51	2.62	0.08
144	2-1/2	2-11/16	3/32	2.487	.020	.103	.003	63.17	0.51	2.62	0.08
145	2-9/16	2-3/4	3/32	2.550	.020	.103	.003	64.77	0.51	2.62	0.08
146	2-5/8	2-13/16	3/32	2.612	.020	.103	.003	66.34	0.51	2.62	0.08
147	2-11/16	2-7/8	3/32	2.675	.022	.103	.003	67.95	0.56	2.62	0.08
148	2-3/4	2-15/16	3/32	2.737	.022	.103	.003	69.52	0.56	2.62	0.08
149	2-13/16	3	3/32	2.800	.022	.103	.003	71.12	0.56	2.62	0.08
150	2-7/8	3-1/16	3/32	2.862	.022	.103	.003	72.69	0.56	2.62	0.08
151	3	3-3/16	3/32	2.987	.024	.103	.003	75.87	0.61	2.62	0.08
152	3-1/4	3-7/16	3/32	3.237	.024	.103	.003	82.22	0.61	2.62	0.08
153	3-1/2	3-11/16	3/32	3.487	.024	.103	.003	88.57	0.61	2.62	0.08
154	3-3/4	3-15/16	3/32	3.737	.028	.103	.003	94.92	0.71	2.62	0.08
155	4	4-3/16	3/32	3.987	.028	.103	.003	101.27	0.71	2.62	0.08
156	4-1/4	4-7/16	3/32	4.237	.030	.103	.003	107.62	0.76	2.62	0.08
157	4-1/2	4-11/16	3/32	4.487	.030	.103	.003	113.97	0.76	2.62	0.08
158	4-3/4	4-15/16	3/32	4.737	.030	.103	.003	120.32	0.76	2.62	0.08
159	5	5-3/16	3/32	4.987	.035	.103	.003	126.67	0.89	2.62	0.08
160	5-1/4	5-7/16	3/32	5.237	.035	.103	.003	133.02	0.89	2.62	0.08
161	5-1/2	5-11/16	3/32	5.487	.035	.103	.003	139.37	0.89	2.62	0.08
162	5-3/4	5-15/16	3/32	5.737	.035	.103	.003	145.72	0.89	2.62	0.08
163	6	6-3/16	3/32	5.987	.035	.103	.003	152.07	0.89	2.62	0.08
164	6-1/4	6-7/16	3/32	6.237	.040	.103	.003	158.42	1.02	2.62	0.08
165	6-1/2	6-11/16	3/32	6.487	.040	.103	.003	164.77	1.02	2.62	0.08
166	6-3/4	6-15/16	3/32	6.737	.040	.103	.003	171.12	1.02	2.62	0.08
167	7	7-3/16	3/32	6.987	.040	.103	.003	177.47	1.02	2.62	0.08
168	7-1/4	7-7/16	3/32	7.237	.045	.103	.003	183.82	1.14	2.62	0.08
169	7-1/2	7-11/16	3/32	7.487	.045	.103	.003	190.17	1.14	2.62	0.08
170	7-3/4	7-15/16	3/32	7.737	.045	.103	.003	196.52	1.14	2.62	0.08
171	8	8-3/16	3/32	7.987	.045	.103	.003	202.87	1.14	2.62	0.08
172	8-1/4	8-7/16	3/32	8.237	.050	.103	.003	209.22	1.27	2.62	0.08
173	8-1/2	8-11/16	3/32	8.487	.050	.103	.003	215.57	1.27	2.62	0.08
174	8-3/4	8-15/16	3/32	8.737	.050	.103	.003	221.92	1.27	2.62	0.08
175	9	9-3/16	3/32	8.987	.050	.103	.003	228.27	1.27	2.62	0.08
176	9-1/4	9-7/16	3/32	9.237	.055	.103	.003	234.62	1.40	2.62	0.08
177	9-1/2	9-11/16	3/32	9.487	.055	.103	.003	240.97	1.40	2.62	0.08
178	9-3/4	9-15/16	3/32	9.737	.055	.103	.003	247.32	1.40	2.62	0.08