Product Introduction
EPDM Bellows & Rubber Bellows, also known as EPR Bellows and ethylene propylene Bellows, are designed as a cover or expansion bellows to take over axial, lateral and angular movements in pipeline systems and protect components against alkalis, strong alkaline, detergent, hot water, steam, ozone, etc.
EPDM Rubber Bellows and dust boots have wide sealing applications due to these excellent chemical resistance properties and its superior ozone resistance.
EPDM Bellows are usually produced by silicone rubber compression molding, extrusion moulding or rubber injection & transfer moulding.
Product Specifications
| Color | black,Customizable |
| Technology | Compression Molding |
| Certification | ROHS,ISO |
| Material | silicone, EPDM, neoprene, NR bellows |
Rubber Bellows & Expansion Joints 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 |
| 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 |
Product Pictures
EPM/EPDM: Polymer of ethylene and propylene, generally divided into binary ethylene-propylene rubber and EPDM.It is characterized by excellent resistance to ozone, ULTRAVIOLET, weather and aging, ranking first in general rubber.Good electrical insulation, chemical resistance, impact elasticity, acid and alkali resistance, low specific gravity, high filling fit.
Heat resistant up to 150℃ , resistant to polar solvents such as ketones and esters, but not resistant to aliphatic and aromatic hydrocarbons, other physical and mechanical properties slightly inferior to natural rubber and better than styrene butadiene rubber.The disadvantage is that self - viscosity and mutual viscosity is very poor, not easy adhesion.
Operating temperature range: about -50~+150 ℃.It is mainly used for lining of chemical equipment, covering of wire and cable, steam hose, heat-resistant transport belt, rubber products for automobile and other industrial products.
EPDM Rubber Bellows Advantages
1. Anti-ozone and weather resistance
2. Aging & Corrosion resistance
3. Waterproof and steam resistance: bathroom equipment, auto radiator && brake system.
4. Electrical insulation: wire & cable
5. Good heat resistance (dry heat): Working Temperature range -50℃-150℃. (-60℉-30℉)
6. Low density and high filling property: can be made into low-cost rubber compounds bue to absorption of lots of oils and fillings.
EPDM Bellows Disadvantages:
1. Slow curing rate
2. Poor self-adhension and mutual viscosity
3. Poor processability: difficult to blend with other unsaturated rubbers
4. Not recommanded for petroleum oils, mineral oil, die-ester lubricants or fuel exposure
Our Advantage for Rubber Bellows Production
Precision Own Mold-making Plant and TechnologyBellows Wall Thickness Tolerance can less: +/- 0.05mm and +/-0.1mm
In-depth knowledge of different elastomer rubber materials molded for rubber expansion joint & dust covers
Mature experience of flexible silicone rubber bellows quality controls:
a. Silicone Rubber bellows wall thickness sizes telorance: less +/- 0.05mm and +/-0.1
b. mini or less expansion joint flashing
c. mold maintenance in aim to up and down mold plate with horizontal stripe in exact position
d. good ejected molding to improve silicone bellows production efficiency
Rapid prototyping with full sizes production equipment and production materials.
In-depth knowledge of overmolded metal + silicone rubber bellows production
