sphericaI MoIded Design

Classification：

Summary

PRODUCT DETAILS

Tube:

The inside rubber liner, it is a leak-proof lining

extending flange to flange, made from synthetic or natural rubber for different applications.

cover:

The outside rubber liner, which has the similar

characteristic like tube,made from synthetic or natural rubber for different applications.

supporting canvas：

This layer is pressure supporting canvas made of high-strength reinforcing nylon or polyester fabric.

FIanges：

Flanges are floating full faced, make an integral parts

of the joint to insure a reliable seals. No gaskets needed.

steeI Reinforcement：

High quality spiral steel wire in both grooved end,

giving maximum strength to the expansion joint while under pressure or vacuum service.

MateriaI Identification

Tube and Cover	Temp. (min/max。F)	suitable Material	Non-suitable Material
Ethylene Propylene (EPDM)	-50。F to +265 F	outstanding ozone-and sunlight-resistance and suitable for most chemicals,alkaline waste-water, compressed air (oil free).Excellent electrical insulation.	Not suitable for oil, gasoline and greases.
Hypalon(CsM)	-80。F to +180。F	outstanding ozone-and sunlight-resistance and suitable for most chemicals. Good oil- and gasoline-resistance.	ketones,esters,certain chlorinated oxidizing acids,nitro and aromatic hydrocarbons.
Neoprene(CR)	-65 F to +155 F	Excellent weather-resistance. Good oil & gasoline-resistance.	oxidizing acids,esters,ketones, aromatic nitro hydrocarbons.
Buna N(NBR)	-65。F to +175。F	Very good oil- and gasoline-resistance and suitable for gases, solvents and greases. Good abrasion-resistance.	Not suitable for steam and hot water.
Viton (FkM)	-50 F to +355 F	suitable for chemicals, oil, gasoline and solvents. Not suitable for chlorines and ketones.	ketones,esters and chlorine
PTFE+EPDM	-65 F to +300 F	outstanding resistance for all media, with the exception of alkali metals at melting point and amides formed from the reaction of a carboxylic acids with an amine.

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