Buna n Expansion Bellows
Custom moulded by Xiamen Better Silicone Rubber Co., Ltd. Made to your drawing, 3D model or sample.
| Model | BT-JRB |
|---|
- Category
- Rubber Bellows
- Lead time
- Quoted with the part
- Tooling
- Designed and cut in house
Also searched as:Buna Expansion BellowsBuna n BellowsBuna n Rubber Expansion Joint BellowsNitrile Rubber Expansion Bellows
Product description
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 Expansion Bellows Advantage:
1. Excellent Oil-proof: Excellent oil resistance after polysulfide rubber, acrylate and FKM
Buna n Expansion Bellows Disadvantage:
Buna n Expansion Bellows Main Struction and Shape
Straight Convolution Buna n Expansion Bellows
Tapered Buna n Expansion Bellows
Metal + Buna n Overmolded Expansion 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
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 Expansion Bellows Main Struction and Shape
Straight Convolution Buna n Expansion Bellows
Tapered Buna n Expansion Bellows
Metal + Buna n Overmolded Expansion Bellows
Buna n Expansion Bellows with Clamping, Holes & Locks
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 |
