✕ High-performance compounds
FKM rubber compounds FKM is a family of high-performance fluoroelastomer rubbers designed for applications where conventional elastomers reach their limits. Offering exceptional resistance to chemicals, fuels, oils, aggressive media, and elevated temperatures, FKM compounds are widely used in critical sealing and engineering applications across the automotive, chemical processing, semiconductor, aerospace, and industrial sectors.
–55 °C to +250 °C
With decades of experience in fluoropolymer elastomers, Polycomp develops and manufactures tailor-made FKM compounds engineered for demanding operating environments. From extreme temperatures and aggressive chemicals to stringent performance and regulatory requirements, our dedicated FKM mixing capabilities, deep material expertise, and application-focused development approach ensure the optimal balance of performance, processability, and durability. We work closely with our customers to select and develop the most suitable FKM technology for each application, delivering reliable performance where failure is not an option.
Typical applications O-rings and sealing systems Oil & gas equipment Chemical processing seals Semiconductor equipment Automotive fuel and emission systems Pumps, valves and mechanical seals Pharmaceutical and process industry equipment Aerospace sealing applications Properties ✓ Excellent temperature resistance
✓ High chemical stability
✓ Low compression set
✓ Excellent fuel and mineral oil resistance
✓ Good ageing, oxygen stability and weather resistance
✓ From –55 °C to +250 °C
Discuss your FKM application → High-performance compounds
FFKM rubber compounds Perfluoroelastomers with a fully fluorinated backbone — the most chemically stable elastomer family, for the most aggressive media and the widest temperature range.
–30 °C to +325 °C
The carbon-fluorine bond is the most stable single bond in organic chemistry — the foundation of FFKM's exceptional thermal, oxidative and chemical resistance. Where FKM has a partially fluorinated backbone, FFKM's backbone is fully fluorinated, giving it the broadest chemical resistance of any elastomer family.
We develop and supply customer-specific FFKM compounds for the most demanding sealing challenges, in small to medium quantities.
Used in critical static and dynamic seals across oil & gas, automotive, food & pharma and process industries.
Properties ✓ High stability in aggressive media
✓ Highly stable in polar and non-polar media
✓ High reliability for dynamic applications
✓ High reliability for static applications
✓ Commonly used in O-rings and gaskets
Discuss your FFKM application → High-performance compounds
HNBR compounds for demanding applications HNBR bridges the gap between conventional elastomers and high-performance fluoropolymers, offering an excellent balance of oil resistance, mechanical strength, and temperature performance. At Polycomp, we develop tailor-made HNBR compounds for demanding sealing and engineering applications where reliability, durability, and long service life are essential.
–40 °C to +160 °C (in oil)
Typical applications Automotive seals and timing belt components Oil & gas sealing systems Hydraulic and pneumatic seals Industrial O-rings and gaskets Roller coverings Drilling and exploration equipment Power transmission components Pumps, valves and fluid handling systems Properties ✓ Excellent resistance to oils, fuels and lubricants
✓ Superior heat resistance compared to NBR
✓ High mechanical strength and abrasion resistance
✓ Excellent resistance to ageing and ozone
✓ Good chemical resistance
✓ Low compression set
✓ Available in FDA-compliant grades
✓ Suitable for dynamic sealing applications
Discuss your HNBR application → High-performance compounds
(F)VMQ rubber compounds Silicones (VMQ) have good heat resistance and cold flexibility, weathering resistance, and good insulating and physiologically neutral properties. Compared to silicone, fluorosilicones (FVMQ) have fluorinated side chains for good oil and fuel resistance.
–50 °C to +200 °C
These VMQ elastomers have excellent cold flexibility down to –50 °C as well as high thermal resistance up to 200 °C, with special compounding up to 300 °C for short periods. They have very good resistance to ageing and to attack by oxygen, ozone and sunlight, along with excellent dielectric and anti-adhesive properties and low toxicity.
Tensile strength and tear resistance are low compared to conventional rubber, and gas impermeability is poor. Resistance to mineral oils and fuels is moderate, while resistance to animal and vegetable fats and oils, brake fluid and engine oils is good.
FVMQ replaces the methyl side groups with trifluoropropyl side groups. That gives nearly the same mechanical and physical properties as silicone rubber, with much better resistance to fuels, solvents, oils and chemicals that would severely degrade VMQ. Its temperature range is slightly reduced, from –50 °C to +180 °C.
Used in food and medical applications, and — for FVMQ — in automotive diaphragms, O-rings, gaskets and seals, aircraft seals, hoses and bellows, and moulded parts exposed to heat, oil or solvents.
Properties ✓ Excellent thermal and heat stability
✓ Best cold flexibility
✓ Excellent weather, aging and ozone stability
✓ Good resistance in oils and hydraulic fluids for FVMQ
✓ Special grades up to 300 °C
Discuss your (F)VMQ application → Specialty black compounds
EPDM rubber compounds EPDM (Ethylene Propylene Diene Monomer) is one of the most versatile and widely used elastomers for sealing applications exposed to weather, water, steam, ozone, and temperature fluctuations. Combining outstanding resistance to ageing and environmental influences with excellent flexibility and cost-effective performance, EPDM compounds are used across a wide range of industrial, infrastructure, water, food, and automotive applications.
–40 °C to +150 °C
Alongside the 70 ShA compounds, Polycomp also offers a softer 60 ShA version that keeps the same properties.
Typical applications Potable water seals and gaskets Food processing equipment seals Medical and pharma sealing applications HVAC sealing systems Automotive weather seals Window and door profiles Industrial hoses and tubing Roofing and construction membranes Valves, pumps and water management equipment Properties ✓ Excellent weathering and ozone resistance
✓ Outstanding resistance to water and steam
✓ Wide temperature operating range
✓ Excellent ageing performance
✓ Good electrical insulation properties
✓ Available in FDA, USP, UL94, EN 45545 and other grades
✓ Excellent flexibility at low temperatures
✓ Available in every colour
Discuss your EPDM application → Specialty black compounds
NBR rubber compounds NBR (Nitrile Butadiene Rubber) is one of the most widely used elastomers for applications requiring excellent resistance to oils, fuels, greases, and hydraulic fluids. Combining good mechanical properties with cost-effective performance, NBR compounds are a trusted choice for sealing applications across the automotive, industrial, fluid power, and general engineering sectors.
–20 °C to +100 °C
The more ACN within the polymer, the higher the resistance to oils. NBR also shows good aging properties as well as good abrasion resistance.
Typical applications O-rings and gaskets Hydraulic and pneumatic seals Fuel system components Industrial hoses and tubing Roller coverings Automotive sealing systems Pumps, valves and fluid handling equipment General industrial sealing applications Properties ✓ Excellent resistance to oils, fuels and greases
✓ Good mechanical strength and abrasion resistance
✓ Good compression set performance
✓ Reliable sealing performance
✓ Cost-effective material solution
✓ Available in FDA-compliant grades
✓ Available in black and coloured compounds
✓ Wide hardness range available
Discuss your NBR application → Specialty black compounds
SBR rubber compounds SBR (Styrene Butadiene Rubber) is a versatile and cost-effective elastomer widely used in industrial applications requiring a balanced combination of mechanical performance, abrasion resistance, and processing flexibility. SBR compounds offer reliable performance in a broad range of static and dynamic applications where durability and value are key considerations.
It maintains flexibility at lower temperatures. SBR competes with natural rubber (NR), and is also used in blends with NR.
Typical applications Industrial seals and gaskets Rollers and roller coverings Conveyor and material handling components Wear-resistant technical rubber parts Industrial mats and protection components Moulded engineering articles General-purpose industrial goods Custom coloured rubber products Properties ✓ Excellent abrasion resistance
✓ Good mechanical strength
✓ Consistent processing characteristics
✓ Good resilience and flexibility
✓ Cost-effective performance
✓ Available in black and coloured compounds
✓ Wide hardness range available
✓ Suitable for blending with other elastomers
Discuss your SBR application → Specialty black compounds
NR rubber compounds Natural rubber (NR) has a long fatigue life and high strength.
–50 °C to +90 °C
The main use of NR is in the tyre industry, vibration absorption and all sorts of moulded parts.
Properties ✓ Good dynamic and mechanical properties
✓ Good fatigue properties
✓ High strength and resilience
✓ Good abrasion properties
✓ Good low temperature flexibility
Discuss your NR application → Specialty black compounds
IIR (butyl rubber) compounds IIR (Isobutylene Isoprene Rubber), commonly known as Butyl Rubber, is a specialty elastomer valued for its exceptional impermeability to gases and moisture, excellent damping characteristics, and outstanding resistance to weathering, ozone, and ageing. These unique properties make IIR the preferred choice for applications requiring long-term sealing performance, pressure retention, and environmental resistance.
Typical applications Pharmaceutical stoppers and closures Food and beverage seals Vacuum and pressure-sealing systems Gas and fluid containment seals Expansion joints and membranes Chemical tank and vessel linings Vibration isolation components Infrastructure and construction sealing systems Properties ✓ Excellent gas and moisture impermeability
✓ Outstanding resistance to ozone and weathering
✓ Excellent ageing performance
✓ Good resistance to acids and polar chemicals
✓ Excellent vibration and sound damping properties
✓ Low gas permeability
✓ Good temperature resistance
✓ Available in food-contact and pharmaceutical grades
Discuss your IIR application → Specialty black compounds
CSM (chlorosulfonated polyethylene) compounds CSM (chlorosulfonated polyethylene), also called Hypalon, is a specialty elastomer known for its exceptional resistance to weathering, ozone, UV exposure, chemicals, and harsh environmental conditions. Combining excellent durability with strong mechanical properties and colour stability, CSM compounds are widely used in demanding outdoor and industrial applications where long service life is essential.
Typical applications Cable jackets and cable protection systems Roller coverings Chemical handling hoses Expansion joints and flexible connectors Outdoor seals and gaskets Mining and heavy-duty equipment components Protective covers and sheeting Infrastructure and construction applications Properties ✓ Outstanding weathering and UV resistance
✓ Excellent ozone resistance
✓ Very good chemical resistance
✓ Excellent ageing performance
✓ Good abrasion and mechanical strength
✓ Excellent colour stability
✓ Good flame resistance
✓ Suitable for demanding outdoor applications
Discuss your CSM application → Specialty black compounds
PU (polyurethane) compounds Polyurethane (PU) is a high-performance elastomer known for its exceptional abrasion resistance, mechanical strength, and load-bearing capability. Combining the elasticity of rubber with the toughness of engineering plastics, PU compounds are widely used in demanding dynamic and wear-intensive applications where conventional elastomers reach their limits.
Typical applications Rollers and drive wheels Conveyor system components Scrapers and wear strips Hydraulic seals and sealing elements Material handling equipment Mining and bulk handling components Industrial wheels and castors Vibration and shock-absorbing elements Properties ✓ Outstanding abrasion and wear resistance
✓ Excellent tensile and tear strength
✓ High load-bearing capability
✓ Excellent resistance to impact and mechanical stress
✓ Good resistance to oils and greases
✓ Low compression set
✓ Excellent dynamic performance
✓ Available in many colours in a wide range of hardness levels
Discuss your PU application → 
