Series SJ-21

Products > Rubber Expansion Joints > Series SJ-21

The SJ-21 is the industry standard spool-type expansion joint. The SJ-21 is available in configurations from zero to four arches – depending on movement requirements – and 3 standard pressure ratings in a variety of elastomers. This hand-built expansion joint can be adapted to the most unusual or difficult applications. Available options include filled arches to eliminate settling of solids in the arch, Teflon liners for severe chemical service, soft cuff ends for slip-on installation, and concentric or eccentric tapered ends for connecting different pipe sizes.

Specifications

Size (in)	F/F per Arch (in) 1	F/F per Arch (in) 2	F/F per Arch (in) 3	F/F per Arch (in) 4	Pressure (psi) SR	Pressure (psi) LP	Pressure (psi) HP	Joint Weight (lb)	Rings Weight (lb)	Axial Compression (in)	Axial Extension (in)	Lateral Deflection (in)	Size (mm)	F/F per Arch (mm) 1	F/F per Arch (mm) 2	F/F per Arch (mm) 3	F/F per Arch (mm) 4	Pressure (kpa) SR	Pressure (kpa) LP	Pressure (kpa) HP	Joint Weight (kg)	Rings Weight (kg)	Axial Compression (mm)	Axial Extension (mm)	Lateral Deflection (mm)
1*	6	10	12	14	165	15	200	1.4	0.9	0.25	0.13	0.13	25	152	254	305	356	1138	103	1379	0.6	0.4	6.4	3.2	3.2
1 1/4*	6	10	12	14	165	15	200	1.6	1.1	0.25	0.13	0.13	32	152	254	305	356	1138	103	1379	0.7	0.5	6.4	3.2	3.2
1 1/2*	6	10	12	14	165	15	200	1.8	1.3	0.25	0.13	0.13	40	152	254	305	356	1138	103	1379	0.8	0.6	6.4	3.2	3.2
2	6	10	12	14	165	15	200	2.3	1.7	0.50	0.25	0.50	50	152	254	305	356	1138	103	1379	1.0	0.8	12.7	6.4	12.7
2 1/2	6	10	12	14	165	15	200	2.8	2.5	0.50	0.25	0.50	65	152	254	305	356	1138	103	1379	1.3	1.1	12.7	6.4	12.7
3	6	10	12	14	165	15	200	3.2	2.7	0.50	0.25	0.50	80	152	254	305	356	1138	103	1379	1.5	1.2	12.7	6.4	12.7
4	6	10	12	14	165	15	200	4.4	3.5	0.50	0.25	0.50	100	152	254	305	356	1138	103	1379	2.0	1.6	12.7	6.4	12.7
5	6	10	12	14	165	15	200	5.9	3.8	0.50	0.25	0.50	125	152	254	305	356	1138	103	1379	2.7	1.7	12.7	6.4	12.7
6	6	10	12	16	165	15	200	6.1	4.4	0.50	0.25	0.50	150	152	254	305	406	1138	103	1379	2.8	2.0	12.7	6.4	12.7
8	6	10	14	16	140	15	190	9.8	6.6	0.75	0.38	0.50	200	152	254	356	406	965	103	1310	4.4	3.0	19.1	9.5	12.7
10	8	12	14	16	140	15	190	15.8	8	0.75	0.38	0.50	250	203	305	356	406	965	103	1310	7.2	3.6	19.1	9.5	12.7
12	8	12	14	16	140	15	190	19.7	11.8	0.75	0.38	0.50	300	203	305	356	406	965	103	1310	8.9	5.4	19.1	9.5	12.7
14	8	12	16	20	85	15	130	26.1	12.7	1.00	0.50	0.50	350	203	305	406	508	586	103	896	11.8	5.8	25.4	12.7	12.7
16	8	12	16	20	65	15	110	30.2	15.7	1.00	0.50	0.50	400	203	305	406	508	448	103	758	13.7	7.1	25.4	12.7	12.7
18	8	12	16	20	65	15	110	32.2	16.2	1.00	0.50	0.50	450	203	305	406	508	448	103	758	14.6	7.3	25.4	12.7	12.7
20	8	12	16	20	65	15	110	37.2	17.6	1.00	0.50	0.50	500	203	305	406	508	448	103	758	16.9	8.0	25.4	12.7	12.7
22	10	14	18	22	65	15	110	45.2	19.1	1.00	0.50	0.50	550	254	356	457	559	448	103	758	20.5	8.7	25.4	12.7	12.7
24	10	14	18	22	65	15	110	59.8	22.9	1.00	0.50	0.50	600	254	356	457	559	448	103	758	27.1	10.4	25.4	12.7	12.7
26	10	14	18	22	55	15	90	74.2	23	1.00	0.50	0.50	650	254	356	457	559	379	103	621	33.7	10.4	25.4	12.7	12.7
28	10	14	18	22	55	15	90	81	27.5	1.00	0.50	0.50	700	254	356	457	559	379	103	621	36.7	12.5	25.4	12.7	12.7
30	10	14	18	22	55	15	90	84.2	30.4	1.00	0.50	0.50	750	254	356	457	559	379	103	621	38.2	13.8	25.4	12.7	12.7
32	10	14	18	22	55	15	90	95	35.4	1.00	0.50	0.50	800	254	356	457	559	379	103	621	43.1	16.1	25.4	12.7	12.7
34	10	14	18	22	55	15	90	103	38.2	1.00	0.50	0.50	850	254	356	457	559	379	103	621	46.7	17.3	25.4	12.7	12.7
36	10	14	18	22	55	15	90	104.2	43.2	1.00	0.50	0.50	900	254	356	457	559	379	103	621	47.3	19.6	25.4	12.7	12.7
38	10	14	18	22	55	15	90	113.5	51.7	1.00	0.50	0.50	950	254	356	457	559	379	103	621	51.5	23.5	25.4	12.7	12.7
40	10	14	18	22	55	15	90	125	52.4	1.00	0.50	0.50	1000	254	356	457	559	379	103	621	56.7	23.8	25.4	12.7	12.7
42	12	14	18	24	55	15	80	134.5	55.2	1.00	0.50	0.50	1050	305	356	457	610	379	103	552	61.0	25.0	25.4	12.7	12.7
44	12	14	18	24	55	15	80	145.6	60.3	1.00	0.50	0.50	1100	305	356	457	610	379	103	552	66.0	27.4	25.4	12.7	12.7
46	12	14	18	24	55	15	80	151.9	61.9	1.00	0.50	0.50	1150	305	356	457	610	379	103	552	68.9	28.1	25.4	12.7	12.7
48	12	14	18	24	55	15	80	186.6	67.7	1.00	0.50	0.50	1200	305	356	457	610	379	103	552	84.6	30.7	25.4	12.7	12.7
50	12	14	18	24	55	15	80	167.3	70.2	1.00	0.50	0.50	1275	305	356	457	610	379	103	552	75.9	31.8	25.4	12.7	12.7
52	12	14	18	24	55	15	80	175.4	73.8	1.00	0.50	0.50	1300	305	356	457	610	379	103	552	79.6	33.5	25.4	12.7	12.7
54	12	14	18	24	55	15	80	181	82.1	1.00	0.50	0.50	1375	305	356	457	610	379	103	552	82.1	37.2	25.4	12.7	12.7
56	12	14	18	24	55	15	80	185.2	89.3	1.00	0.50	0.50	1400	305	356	457	610	379	103	552	84.0	40.5	25.4	12.7	12.7
58	12	14	18	24	55	15	80	194.3	92.2	1.00	0.50	0.50	1475	305	356	457	610	379	103	552	88.1	41.8	25.4	12.7	12.7
60	12	14	18	24	55	15	80	200.9	94.8	1.00	0.50	0.50	1500	305	356	457	610	379	103	552	91.1	43.0	25.4	12.7	12.7
62	12	14	18	24	55	15	80	215.7	111.2	1.00	0.50	0.50	1550	305	356	457	610	379	103	552	97.8	50.4	25.4	12.7	12.7
66	12	14	18	24	55	15	80	236.9	118.2	1.00	0.50	0.50	1675	305	356	457	610	379	103	552	107.5	53.6	25.4	12.7	12.7
72	12	14	18	24	45	15	70	254.9	134.2	1.00	0.50	0.50	1800	305	356	457	610	310	103	483	115.6	60.9	25.4	12.7	12.7
78	12	14	18	24	45	15	70	276	151	1.00	0.50	0.50	1975	305	356	457	610	310	103	483	125.2	68.5	25.4	12.7	12.7
84	12	14	18	24	45	15	70	284	165.4	1.00	0.50	0.50	2100	305	356	457	610	310	103	483	128.8	75.0	25.4	12.7	12.7
96	12	16	18	24	45	15	70	311	210	1.00	0.50	0.50	2400	305	406	457	610	310	103	483	141.1	95.3	25.4	12.7	12.7
102	12	16	20	24	45	15	70	344	230.9	1.00	0.50	0.50	2550	305	406	508	610	310	103	483	156.0	104.7	25.4	12.7	12.7
108	12	16	20	24	45	15	70	377	263.3	1.00	0.50	0.50	2750	305	406	508	610	310	103	483	171.0	119.4	25.4	12.7	12.7