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Buna n Expansion Bellows

Buna n Expansion Bellows are also called Nitrile & Buna n Expansion Bellows, which mainly are used as a protective cover expansion joints & boots to maintain inner equipment preformance, especially, oil-proof performance.

Quantity:
  • BT-JRB

Buna n Expansion Bellows

Buna n Expansion Bellow are also call Nitrile & Buna n Bellows, which are mainly used as a protective cover expansion joints & boots to maintain inner equipment preformance, especially, oil-proof performance. Elastomer Buna n Expansion Bellows mainly made by silicone rubber compression molding, extrusion moulding or rubber injection moulding.
Buna n Bellows
Buna n Expansion Bellows Advantage:

1. Excellent Oil-proof
Excellent oil resistance after polysulfide rubber, acrylate and FKM
2. High tensile strength and wear resistance.
3. Good Heat Resistance: 
Working Temperature -35oC-110oC. (Short-period working: 120oC)
4. Good air tightness
5. Strong Adhesion

Buna n Expansion  Bellows Disadvantage:
1. Poor ozone resistance, against storage 
2. Poor electrical property
3. No resistance to aromatic solvents, halogenated hydrocarbon solvents and ketones & esters solvents
4. Low elasticity
Buna n Rubber Expansion Bellows
Buna n Expansion  Bellows Main Struction and Shape
Buna n Expansion Bellows

Straight Convolution Buna n Expansion Bellows
Buna n Rubber Bellows
Tapered Buna n Expansion Bellows
Tapered Buna n Bellows
Metal + Buna n Overmolded 
Expansion  Bellows
Metal+Buna Rubber Bellows
Buna n Expansion Bellows with Clamping, Holes & Locks

Buna n Bellows with Clamp
Rubber Bellows Main Materials


Material Abbreviation Temperature Range Aging Weathering Ozone Resistance to Oil & Grease Water Swell Resistance  Flex-Fatigue Economy of Material Material Notes
Chloroprene(Neoprene) CR -40F to 250F Good Good Average Very Good Good exposure to refrigerants,can be compounded for FDA applications
Nitrile NBR -22F to 212F Poor Very Good Good Good Very Good Automotive Applications, Good Oil Proof
Ethylence-Propylene EPDM,EPM -60F to 300F Very Good Poor Very Good Good Very Good Outside Applications, Good Weather Proof
Silicone VMQ -75F to 450F Very Good Average Very Good Very Good Average Medical Applications
Fluo Rubber FKM 5F   to 390F Very Good Very Good Good Average Poor Rubber King, Widely Applications

Contacts

Office Address: 7F7B09, Harmony Square, No.2 Huli Avenue, Huli District, Xiamen , China.
  Factory Address: 165th, Tong'An Park, Industrial Zone, Tong'An District, Xiamen City, China
 Post Code: 361000
Tel: 86 592-5616001
E-mail: 
pc@better-silicone.com

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