80*95*4mm VAY DLI Hydraulic Wiper Seal R220-7 CAT120 NBR Material

80*95*4mm VAY DLI Hydraulic Wiper Seal R220-7 CAT120 NBR Material

Dust Pin Seal 80*95*4,VAY DLI Excavator Bucket Pin Dust Scraper, R220-7 CAT120 Wiper Seal NBR Material Black Color

VAY is the first gate on the cylinder outter part, it is resposiblility as a dust scraper, for avoid the dust or something powder bring into the cylinder. 

80*95*4 is the top selling size in all sizes of VAY, it is wide used for Doosan ,Kobelco,Caterpiller,Liugong,Komatsu ,Hitachi and some more brand of machine.

Here we got full size of this product  

(1) Full of elasticity and resilience;

(2) Appropriate mechanical strength, including expansion strength, elongation and tear resistance.

(3) The performance is stable, it is not easy to swell in the medium, and the thermal shrinkage effect (Joule effect) is small.

(4) It is easy to process and shape, and can maintain precise dimensions.

(5) Does not corrode the contact surface, does not pollute the medium, etc.

The most suitable and commonly used material to meet the above requirements is rubber, so the sealing ring is mostly made of rubber. There are many types of rubber, and new types of rubber are constantly appearing. When designing and selecting, one should understand the characteristics of various rubbers and choose them reasonably.