TECHNICAL SERVICES
Compound Development
We have standard compounds all time available at our end…
TECHNICAL SERVICES
We have standard compounds all time available at our end…
We are working as per international standards and certifications for our rubber compound such as ASTM, SAE, NSF, FDA, WRAS, etc.
All our compounds are REACH & ROHS complaint.
Standard Polymers we process…
| GB GUMMI Ref: | GBN | |
|---|---|---|
| ASTM Classification: | NR | |
| FULL FORM OF RM/Rubber | Natural Rubber | |
| Benefits | High Tensile Properties, Better Abrasion resistance, Good Resilience properties | |
| Limitations | Poor resistance to oils and fuels, inferior weather resistance. | |
| Service Temperature °C | -30 to 60°C | |
| Applications / Products | Suspension Mounts, Damper, Bushing, Bump Stop, Diaphragm, Isolator Mount, Food Grade Seals, V BELTS, etc. | |
| GB GUMMI Ref: | GBS | |
|---|---|---|
| ASTM Classification: | SBR | |
| FULL FORM OF RM/Rubber | Styrene Butadiene Rubber | |
| Benefits | Good Tensile Properties, Good brake oil resistance. | |
| Limitations | Poor resistance to oils and non-polar solvents, Poor steam resistance, Poor ozone and weathering resistance. | |
| Service Temperature °C | -25 to 100°C | |
| Applications / Products | Damper, Isolator Mount, NR+SBR Blend parts, Brake seals. | |
| GB GUMMI Ref: | GBB | |
|---|---|---|
| ASTM Classification: | NBR | |
| FULL FORM OF RM/Rubber | Nitrile Butadiene Rubber | |
| Benefits | Good resistance to oils and non-polar solvents. | |
| Limitations | Poor ozone and weathering resistance. Poor steam resistance. | |
| Service Temperature °C | -40 to 120°C | |
| Applications / Products | Oil resistant applications in automotive, marine and aircraft fuel systems. | |
| GB GUMMI Ref: | GBF | |
|---|---|---|
| ASTM Classification: | FKM | |
| FULL FORM OF RM/Rubber | fluorocarbon copolymers based on vinylidene fluoride and hexapropylene fluoride | |
| Benefits | Excellent high temperature resistance Good resistance to oils and most non-polar solvents Excellent ozone and weathering resistance. | |
| Limitations | Limited steam resistance Poor resistance to methanol. Poor low temperature performance. | |
| Service Temperature °C | -20 to 240°C | |
| Applications / Products | General purpose seals for aerospace fuel and automotive applications. | |
| GB GUMMI Ref: | GBE | |
|---|---|---|
| ASTM Classification: | EPDM | |
| FULL FORM OF RM/Rubber | Terpolymer of ethylene, propylene and a diene cure site monomer (EPDM) | |
| Benefits | Excellent steam resistance. Excellent ozone and weathering resistance Good low temperature flexibility. | |
| Limitations | Poor resistance to oils and non-polar solvents. | |
| Service Temperature °C | -55 to 150°C | |
| Applications / Products | O-rings, seals and components for potable water seals, taps etc, brake systems, automotive cooling systems, nuclear cooling systems, outdoor exposure applications. | |
| GB GUMMI Ref: | GBA | |
|---|---|---|
| ASTM Classification: | ACM | |
| FULL FORM OF RM/Rubber | Copolymer of ethyl and butyl acrylate | |
| Benefits | Excellent resistance to petroleum fuel and oil Good heat resistance Good ozone resistance Resists flex cracking. | |
| Limitations | Moderate water resistance. | |
| Service Temperature °C | -60 to 175°C | |
| Applications / Products | Automotive sealing applications, including seals for transmission and power steering systems. | |
| GB GUMMI Ref: | GBP | |
|---|---|---|
| ASTM Classification: | NBR PVC | |
| FULL FORM OF RM/Rubber | Blend of polyvinyl chloride and acrylonitrile butadiene rubber. | |
| Benefits | Good resistance to oils. Improved ozone resistance compared to NBR. | |
| Limitations | Poor weathering resistance. Poor steam resistance. | |
| Service Temperature °C | -40 to 100°C | |
| Applications / Products | Oil resistant seals that may be exposed to daylight or other forms of radiation. | |
| GB GUMMI Ref: | GBC | |
|---|---|---|
| ASTM Classification: | CR | |
| FULL FORM OF RM/Rubber | Polychloroprene rubber | |
| Benefits | High tensile strength and resilience Excellent ozone and weathering resistance Good resistance to oils. | |
| Limitations | Poor resistance to some non-polar solvents Poor steam resistance. | |
| Service Temperature °C | -40 to 125°C | |
| Applications / Products | General purpose seals and hoses; seals for refrigeration industry applications. | |
| GB GUMMI Ref: | ||
|---|---|---|
| ASTM Classification: | AEM | |
| FULL FORM OF RM/Rubber | Copolymer of ethylene and acrylate | |
| Benefits | Excellent resistance to transmission fluids, water, glycol mixtures and weak bases Good dynamic properties over a wide temperature range Excellent vibration dampening Excellent ozone resistance Can be formulated for low flammability / low smoke specifications. | |
| Limitations | Poor steam resistance Poor resistance to brake fluid and phosphate esters. | |
| Service Temperature °C | -40 to 175°C | |
| Applications / Products | Automotive sealing applications, including seals for transmission and power steering systems. | |
| GB GUMMI Ref: | GBD | |
|---|---|---|
| ASTM Classification: | ECO | |
| FULL FORM OF RM/Rubber | Polymers based on polyepichlorohydrin which may also contain ethylene oxide and allyl glycidyl ether | |
| Benefits | Excellent ozone resistance Good resistance to oils .Fire resistance. | |
| Limitations | Poor resistance to some non-polar solvents Poor steam resistance. | |
| Service Temperature °C | -35 to 125°C | |
| Applications / Products | Seals, gaskets, diaphragms, cable jackets and belting. | |
| GB GUMMI Ref: | GBV | |
|---|---|---|
| ASTM Classification: | VMQ | |
| FULL FORM OF RM/Rubber | Polydimethylsiloxane containing vinyl (VMQ) | |
| Benefits | Excellent resistance to high and low temperatures. | |
| Limitations | Poor tensile strength Poor resistance to oils and non-polar solvents. | |
| Service Temperature °C | -60 to 225°C | |
| Applications / Products | Food and medical applications. | |
| GB GUMMI Ref: | GBV | |
|---|---|---|
| ASTM Classification: | FVMQ | |
| FULL FORM OF RM/Rubber | Copolymer of fluorovinyl and methyl siloxane | |
| Benefits | Excellent resistance to high and low temperatures Excellent ozone resistance Excellent compression set resistance Good resistance to oils and most non-polar solvents. | |
| Limitations | Poor tensile strength and abrasion resistance. | |
| Service Temperature °C | -60 to 200°C | |
| Applications / Products | Food and medical applications, aircraft fuel systems. | |
| GB GUMMI Ref: | GBH | |
|---|---|---|
| ASTM Classification: | HNBR | |
| FULL FORM OF RM/Rubber | Hydrogenated (≥ 90% saturation) version of acrylonitrile-butadiene rubber, which shows improved stability and physical properties compared to standard NBR | |
| Benefits | Good resistance to oils and non-polar solvents High tensile strength Good ozone and weathering resistance Good abrasion resistance Excellent heat resistance. | |
| Limitations | Decreased low temperature flexibility compared to NBR Poor steam resistance. | |
| Service Temperature °C | -25 to 170°C | |
| Applications / Products | Oil & gas industry. | |
| GB GUMMI Ref: | GBK | |
|---|---|---|
| ASTM Classification: | CIIR | |
| FULL FORM OF RM/Rubber | Derivative of butyl rubber which has been reacted with chlorine in a continuous process | |
| Benefits | Low gas permeability Excellent ozone resistance Good steam resistance Good fire resistance. | |
| Limitations | Poor resistance to oils and non-polar solvents . | |
| Service Temperature °C | -50 to 120°C | |
| Applications / Products | Inner tyre tubes, breathing apparatus for defence and fire services, Dampers. | |
