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BUNA Nitrile / EPDM / VITON Wafer/ Lug Butterfly Valve Liners With High Hardness

BUNA Nitrile / EPDM / VITON Wafer/ Lug Butterfly Valve Liners With High Hardness

  • BUNA Nitrile / EPDM / VITON Wafer/ Lug Butterfly Valve Liners With High Hardness
  • BUNA Nitrile / EPDM / VITON Wafer/ Lug Butterfly Valve Liners With High Hardness
  • BUNA Nitrile / EPDM / VITON Wafer/ Lug Butterfly Valve Liners With High Hardness
  • BUNA Nitrile / EPDM / VITON Wafer/ Lug Butterfly Valve Liners With High Hardness
BUNA Nitrile / EPDM / VITON Wafer/ Lug Butterfly Valve Liners With High Hardness
Product Details:
Place of Origin: Suzhou, China
Brand Name: Customized
Certification: KTW W270 EN681-1,ACS,NSF61/372;WRAS,EC1935;FDA,EC1935;REACH,ROHS
Model Number: 928015C5
Payment & Shipping Terms:
Minimum Order Quantity: 100 pieces
Price: Negotiation
Packaging Details: plywood case size 115*71*61cm
Delivery Time: 10-15 days
Payment Terms: T/T, L/C, D/A, D/P, Western Union
Supply Ability: 50,000 pieces / month
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Detailed Product Description
Color: Yellow, Orange, Brown, Green, Black... Material: Silicone, EPDM, NBR, FKM
Temperature: -60℃~80℃ Product Name: Elastic Butterfly Valve Seat
Suitable Media: Water, Potable Water, Drinking Water, Wastewater... Hardness: 10~100 °
Media: Water,Oil,Gas,Base,Liquid Performance: Replaceable
High Light:

butterfly valve rubber seat

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ductile iron valve seats

 

BUNA(Nitrile) / EPDM / VITON wafer/ lug butterfly valve liners
 

 

Classification of rubber

There are many varieties of rubber, and the classification methods are not uniform.

 

1) According to the source of materials, it can be divided into two categories: Natural Rubber and Synthetic Rubber.

 

2) According to its performance and use, it can be divided into two categories: Universal Rubber and Specialty Rubber Eastomer.

* Any rubber with the same or close performance as natural rubber, good physical properties and processing properties, and can be widely used in tires and other general rubber products is called general rubber.

General rubber: natural rubber (NR), styrene butadiene rubber (SBR), butadiene rubber (polybutadiene rubber, BR), isoprene rubber (polyisoprene rubber, IR)

 

* Any special rubber product with special properties, special for heat resistance, cold resistance, chemical corrosion resistance, oil resistance, solvent resistance, radiation resistance, etc. is called special rubber.

Special rubbers include: nitrile rubber (NBR), silicone rubber, fluoro rubber, urethane rubber, polysulfide rubber, polyacrylate rubber (UR), chloroether rubber, chlorinated polyethylene rubber (CPE), chlorosulfonated polyethylene (CSM), butadiene rubber, etc.

 

In fact, there is no strict boundary between general rubber and special rubber. For example, ethylene propylene rubber has the above two characteristics. Between general rubber and special rubber are: neoprene (CR), ethylene propylene rubber (EPDM), butyl rubber (IIR).


 
Common used materials quick selection: 

Summary table of rubber properties (Suzhou Meilong)
Rubber Name Natural rubber Butadiene rubber Butadiene styrene rubber Butyl rubber Ethylene propylene rubber Ethylene-vinyl acetate copolymer Neoprene Chlorosulfonated polyethylene Buna-N rubber Polyurethane rubber Silicone Rubber Fluororubber
Short Name NR BR SBR IIR EPM
EPDM
EVA CR CSM NBR PU SI FPM
Pure rubber performance Proportion 0.91~0.93 0.91~0.94 0.93~0.94 0.91~0.93 0.86~0.87 0.98~0.99 1.15~1.25 1.11~1.18 1.00~1.20 1.00~1.30 0.95~0.98 1.80~1.82
Refractive index(ND) 1.59 5339~1.53 .508~1.50 1.353~1.560 1.521
Solubility parameter(SP) 7.9~8.1 8.4~8.6 8.4~8.6 7.7~8.06 7.9~8.0 8.85 8.1~9.3 9.64 10 7.3 7.3
Mooney viscosity ML1+4,100℃ 90~150 35~55 30~60 45~75 45~120 20~30 45~120 30~55 30~100 25~60 65~180
Processability A A A C B A A B A C B C
Vulcanized rubber mechanical properties Hardness (Shore A) 10~100 30~100 30~100 20~90 30~90 50~90 10~90 50~90 15~100 10~100 30~90 50~90
Tear strength kg/cm2 30~300 20~200 50~200 50~150 50~200 70~200 50~250 70~200 50~250 200~450 40~100 70~200
Elongation % 100~1000

100~

800

100~

800

100~

800

100~

800

100~

600

100~

1000

100~500

100~

800

300~800 50~500 100~500
Elasticity A A B C B B A B B A A C
Tear strength A B C B C B B B B A C~D B
Compression set A B B C B B A B A A A B
Wear resistance A A A B B B A~B A A A C~D A
Flexural crack resistance A C B A B B B B B A B~D B


 

BUNA Nitrile / EPDM / VITON Wafer/ Lug Butterfly Valve Liners With High Hardness 0BUNA Nitrile / EPDM / VITON Wafer/ Lug Butterfly Valve Liners With High Hardness 1
 

Contact Details
Suzhou Meilong Rubber and Plastic Products Co., Ltd.

Contact Person: Lucy Shi

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