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Expansion joints

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Rubber expansion joints

Rubber expansion joints are used in heating, ventilation and air conditioning systems, power plants, refineries, chemical plants, shipbuilding and many other industries. Beyond high extensibility they are characterized by a high movement absorption and excellent noise reduction. According to the expansion joints application there are different kinds of rubber. Fabrics of synthetic fibers (such as Nyloncord or Stahlcord) are used as the pressure medium. Flanged connections are self-sealing.

Material	Applications	Temperature [°C]
SBR	Cooling systems, sea water, weak acids	up to 80°C
EPDM	Cooling water, hot water, sea water, acid	up to 100°C
EPDM HT	Hot water	up to 130°C
EPDM ABR	Substances causing abrasion	up to 90°C
NBR	Greases, oils	up to 90°C
Nitrile	Kerosene, gasoline, solvents, oils, petrochemical media	up to 100°C
Butyl	Transport of low-temperature media	from -50°C up to + 80°C
Hypalon	Strong acids, chemicals	up to 100°C
Viton	Petroleum products	up to 200°C
FPM	Alkali	up to 180°C
Silicon	Hot air, salt water	up to 200°C

We offer expansion joints in standard sizes DN32 to DN600 in different build-in lengths. We also offer rubber expansion joints in larger sizes, special construction and other solutions according to customers’ needs. Each offered rubber expansion joint can be equipped with additional ties limiting. Please contact our office for any further information about rubber expansion joints.

Dimensions of rubber expansion joints

Dimensions table of rubber expansion joints

	L=130 mm				L=150 mm				L=175 mm
DN	compensation-movements				compensation-movements				compensation-movements
DN	compressing + mm	extension - mm	axial ± mm	angular ± °	compressing + mm	extension - mm	axial ± mm	angular ± °	compressing + mm	extension - mm	axial ± mm	angular ± °
25	30	20	20	32
32	30	20	20	32	13	10	13	14
40	30	20	20	32	13	10	13	14
50	30	20	20	32	13	10	13	14
65	30	20	20	27	13	10	13	14
80	30	20	20	27	13	10	13	14
100	30	20	20	23	16	10	13	14
125	30	20	20	23	16	10	13	14
150	30	20	20	14	16	10	13	14
200	30	20	20	14	16	10	13	14	30	20	20	5.6
250	30	20	20	9					30	20	20	4.9
300	30	20	20	9					30	20	20	4.3
350									30	20	20	3.8
400									30	20	20	3.4
450									30	20	20	3
500									30	20	20	2.8
600									30	20	20	2.4
700									30	20	20	2.1
800									30	20	20	1.9
900									30	20	20	1.8
1000									30	20	20	1.6
1100									30	20	20	1.5
1200									30	20	20	1.5

	L=200 mm				L=250 mm				L=275 mm
DN	compensation-movements				compensation-movements				compensation-movements
DN	compressing + mm	extension - mm	axial ± mm	angular ± °	compressing + mm	extension - mm	axial ± mm	angular ± °	compressing + mm	extension - mm	axial ± mm	angular ± °
200					35	25	25	11.8	40	30	30	11.8
250	25	16	22	15	35	25	25	9.6	40	30	30	9.6
300	25	16	22	15	35	25	25	8.1	40	30	30	8.1
350	25	16	22	15	35	25	25	7	40	30	30	7
400	25	16	22	15	35	25	25	6.2	40	30	30	6.2
450	25	16	22	15	35	25	25	5.8	40	30	30	5.8
500	25	16	22	15	35	25	25	5.1	40	30	30	5.1
600	51	31	31	4.9	35	25	25	4.3	40	30	30	4.3
700	41	21	25	3.8	35	25	25	3.9	40	30	30	3.9
800	41	21	24	3.4	35	25	25	3.4	40	30	30	3.4
900	41	21	24	3	35	25	25	3	40	30	30	3
1000	41	21	24	2.8	35	25	25	2.8	40	30	30	2.8
1100	41	21	24	2.6	35	25	25	2.6	40	30	30	2.6
1200	41	21	23	2.4	35	25	25	2.4	40	30	30	2.4

	L=300 mm				L=350 mm
DN	compensation-movements				compensation-movements
DN	compressing + mm	extension - mm	axial ± mm	angular ± °	compressing + mm	extension - mm	axial ± mm	angular ± °
200	45	30	35	17.7	55	30	45	23.8
250	45	30	35	19.5	55	30	45	19.5
300	45	30	35	16.5	55	30	45	16.5
350	45	30	35	14.3	55	30	45	14.3
400	45	30	35	12.6	55	30	45	12.6
450	45	30	35	11.3	55	30	45	11.3
500	45	30	35	10.3	55	30	45	10.3
600	45	30	35	8.7	55	30	45	8.7
700	45	30	35	7.5	55	30	45	7.5
800	45	30	35	6.6	55	30	45	6.6
900	45	30	35	6.1	55	30	45	6
1000	45	30	35	5.4	55	30	45	5.4
1100	45	30	35	5	55	30	45	5
1200	45	30	35	4.6	55	30	45	4.6