1.Rubber expansion joint Specifications

1.DN 32~3000mm 
2.PN 0.25/0.6/1.0/1.6/2.5 
3.Certificate: ISO9001/ISO14001 
4.rubber: IIR, CR, EPDM, NR, NBR

5.Connect: flange

2. Rubber expansion Joint Description:

• The rubber expansion joint could primarily reduce the vibration and the noise of the piping system.completely solve the different piping problems as dispalcement of joint,axial flex and etc.

• According to different material requirment ,rubber expansion joint could be made as acid proof,alkali proof,corrosion proof to suit different medium and enviroment.

•  The material are good sealing ,light weighting,easy to fix and maintain,also has longworking expecting.. But please keep the rubber expansion  joint far away from sharp matal in order to avoid breaking of the rubber body..




3. Rubber expansion Joint Physical and Mechanical:

Physical and Mechanical Properties of Rubber Expansion Joint
No.	Item		index	Measured value
			Inner/outer  rubber lining
1	Tensile strength (Mpa)		≥12	13.5
2	Tensile yield (%)		≥450	560
3	Tension set at break (%)		≤25	20
4	Hardness (Shore A hardness)		60±5	60
5	Brittleness temperature (°C)		≤-30	-40
6	Cohesive strength (between cord fabric) (KN/m)		≥2.0	4.8
7	100°C*48h Hot air aging	Rate of Tensile Strength Reduction	≤25	15
		Rate of Ultimate Elongation Reduction	≤30	20
8	Mass change (10%H2SO4*Room temperature) %		≤3	2
9	Mass change (10%H2SO4*Room temperature) %		≤3	2