First-Rate Rubber Materials and Compound Selection
Premium polymers from Lanxess, ExxonMobil, and Sumitomo — compounded in-house on 55-litre and 75-litre kneaders with automatic chemical weighing, rheometer-tested per batch.
Material families
Compounds We Process
| Material | Common Trade Names | Best For | Watch Out For |
|---|---|---|---|
| NBR (Nitrile) | Buna-N, Krynac, Nipol | Oil seals, fuel hoses, automotive seals | Poor ozone resistance |
| EPDM | Keltan, Vistalon, Royalene | Water seals, weatherstrips, outdoor parts | Not for petroleum oils |
| SBR | Krylene, Buna SE | General-purpose, low-cost parts | Limited oil/ozone resistance |
| NR (Natural) | TSR, RSS grades | High-resilience mounts, bushings | Poor oil and heat resistance |
| CR (Neoprene) | Baypren, Neoprene | Moderate oil + weather, marine | Mid-tier on every axis |
| FKM (Fluoro) | Viton, Dai-El | Hot oil, fuel, aggressive chemicals | Higher cost per kg |
| Silicone (VMQ) | Elastosil, KE series | Wide temperature, high-voltage power | Lower tensile strength |
Suppliers
Lanxess · ExxonMobil · Sumitomo
- Lanxess — Buna NBR and Krynac NBR grades, Keltan EPDM. Industry-standard for automotive and oil-contact applications.
- ExxonMobil Chemical — Vistalon EPDM, butyl rubber. Wide product range and consistent quality.
- Sumitomo Chemical — Specialty elastomers and synthetic rubber compounds. Strong on automotive-grade applications — aligned with the Japanese OEM supply chain we serve.
Sourcing from established polymer producers — not regional traders — is how we keep batch-to-batch consistency tight. Every incoming lot is checked against the certificate of analysis before release.
In-house compounding
We Do Not Outsource Compounding
2Open roll mixing mills
55LInternal kneader (medium batches)
75LInternal kneader (larger batches)
2Compound cooling units
AutoChemical weighing system
BarwellAutomatic rubber preformer
Owning the compound step end-to-end is what makes traceability meaningful — we can stand behind every part because we made the compound that went into it.
Compound selection
Five Questions to Pick the Right Material
- What fluid will the part touch? (Oil, fuel, water, coolant, hydraulic fluid, air, food?)
- What temperature range? (Continuous and peak)
- How long does the part need to last? (Service life in years, hours, or cycles)
- Is there ozone, UV, or aggressive chemical exposure?
- What hardness and mechanical performance is needed? (Shore A 40–90, tensile, compression set, tear)
Send us those five, plus your part drawing — our team, matching compounds for Japanese OEM programs since 2003, will recommend the compound and grade.
