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Black NBR Seat Butterfly Valve , Centerline 1 '' - 54 '' Hub Seal Seat

Suzhou Meilong Rubber and Plastic Products Co., Ltd.
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Black NBR Seat Butterfly Valve , Centerline 1 '' - 54 '' Hub Seal Seat

Brand Name : SML
Model Number : 92801560
Certification : ISO, WRAS, ACS, FDA, DVGW, NSF, SGS
Place of Origin : Suzhou, China
MOQ : 10 pieces
Price : Negotiation
Payment Terms : T/T, L/C, D/A, D/P, Western Union
Supply Ability : 30,000 PCS / month
Delivery Time : 10-15 days
Packaging Details : plywood case, size 115*71*61cm
Color : black
Size range : 1''-54''
Material : BUNA-N
Design : tongue-and-groove seat
Type : hub seal
Suitable media : water, drinking water, potable water...
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Black NBR valve seat for wafer / lug type butterfly valve 1''-54''​


Basic characteristics of nitrile rubber (NBR):

1. Due to the presence of polar nitrile groups, it has high stability to non-polar or weakly polar mineral oils, animal and vegetable oils, liquid fuels and solvents. Oil resistance is its greatest specialty. The higher the propylene content, the better the oil resistance.

2. heat resistance is better than natural rubber, styrene butadiene rubber, neoprene, can be used in the air at 120 ° C for a long time.

3. good air tightness, second only to butyl rubber.

4. Cold resistance and low temperature resistance are poor, and the higher the acrylonitrile content, the worse the cold resistance.

5. because of the non-crystalline rubber, the raw rubber strength is low, must be blended with a reinforcing agent, improve the amount of acrylonitrile combined to help increase strength and wear resistance, but the elasticity is reduced.

6. The dielectric properties of nitrile rubber are inferior and belong to semiconductor rubber.

7. The balance between oil resistance and permanent deformation of the rubber compound, and the balance between oil resistance and electrical properties is important.

8. the scope of application: Mainly used in the production of oil-resistant rubber products, widely used in the manufacture of seals, gaskets, gaskets and other molded products and extruded products, all kinds of rubber rubber rollers, oil-resistant hoses, industrial supplies and adhesives, etc.


Certificates:

German KTW, FDA, W270, British WRAS, US NSF61/372, French ACS.


Related Material Quick Selection Table:


Summary table of rubber properties (Suzhou Meilong)
Rubber NameNatural rubberButadiene styrene rubberEthylene propylene rubberNeopreneChlorosulfonated polyethyleneBuna-N rubberPolyurethane rubberFluororubber
Short NameNRSBREPM
EPDM
CRCSMNBRPUFPM
Pure rubber performanceProportion0.91~0.930.93~0.940.86~0.871.15~1.251.11~1.181.00~1.201.00~1.301.80~1.82
Refractive index(ND)1.595339~1.531.353~1.5601.521
Solubility parameter(SP)7.9~8.18.4~8.67.9~8.08.858.1~9.39.64107.3
Mooney viscosity ML1+4,100℃90~15030~6045~12045~12030~5530~10025~6065~180
ProcessabilityAABABACC
Vulcanized rubber mechanical propertiesHardness (Shore A)10~10030~10030~9010~9050~9015~10010~10050~90
Tear strength kg/cm230~30050~20050~20050~25070~20050~250200~45070~200
Elongation %100~1000100~800100~800100~1000100~500100~800300~800100~500
ElasticityABBABBAC
Tear strengthACCBBBAB
Compression setABBABAAB
Wear resistanceAABA~BAAAA
Flexural crack resistanceABBBBBAB
Main applicationTires, rubber shoes, hoses, tapes, miscellaneous items, etcSame as leftWire and cable, door and window seals, waterproof coils, etc.Wire and cable industrial supplies shockproof rubber sealing strip adhesiveLining, tape, anti-corrosion seals, anti-aging coatings, etc.Oil seals, cups, 0-rings, oil-resistant hoses, petroleum fittings, etc.Rubber roller, solid tire, seal, timing tape, etc.High temperature resistant oil resistant products, oil seals, seals, hoses, etc.



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Black NBR Seat Butterfly Valve , Centerline 1 '' - 54 '' Hub Seal Seat Images

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