Custom PTFE Products & Precision Rubber-to-Metal Bonding Manufacturing
With state-of-the-art injection, transfer, and compression moulding presses, Horiaki India produces high-integrity PTFE components, PTFE-lined seals, and vulcanized rubber-to-metal bonded assemblies in low to high volumes for international OEMs in USA, Europe, and worldwide.
Rubber-to-Metal Bonding
Chemical and mechanical vulcanization onto stainless steel, carbon steel, and aluminium inserts.
Substrate Encapsulation
Precision tooling with chaplet pin support ensuring uniform elastomer flow without air traps.
High-Precision Injection
Injection and compression moulding machines up to 500 Tons handling parts from 0.1g to 5kg.
Traceability & In-House Lab
ASTM D429 90-degree bond tear tests, rheometer cure curves, and EN 10204 3.1 MTR certs.
How Rubber-to-Metal & PTFE Bonding is Engineered
Rubber-to-metal bonding is the engineering process by which elastomeric thermoset polymers are chemically cross-linked to metallic inserts during the high-pressure vulcanization moulding phase. At Horiaki India, our proprietary preparation protocols guarantee that bond strength between the rubber and metal substrate exceeds the tensile tear strength of the elastomer itself (> 12 MPa per ASTM D429 Method B).
Primary Engineering Benefits
- Elimination of Assembly Leak Paths: Integrated single-piece bonded parts prevent fluid or gas migration behind seals.
- Superior Dynamic NVH Damping: Combines the structural load rigidity of steel with the viscoelastic energy absorption of rubber.
- Error-Free OEM Assembly: Eliminates manual misorientation or scraping of loose seals during automated equipment production.
- Chemical & Corrosive Shielding: Metal cores fully encapsulated in FKM or EPDM resist caustic washdowns, sea water, and acids.
5-Stage Quality Bonding Workflow
ASTM D429Metallic inserts (stainless steel, carbon steel, aluminium, brass) undergo automated ultrasonic solvent degreasing and grit blasting to achieve an optimized surface roughness profile.
Robotic spray application of primer and heat-reactive adhesive coatings formulated specifically for the selected elastomer chemistry and service environment.
Treated inserts are positioned with micro-precision into multi-cavity hardened P20/H13 tooling, utilizing specialized chaplet pins for full elastomer encapsulation where required.
Controlled thermal and pressure cycle (up to 500 Tons compression or injection press) induces covalent cross-linking across the elastomer-metal interface, achieving bond strength exceeding the rubber substrate itself.
Liquid nitrogen tumbling eliminates parting line flash without scratching sealing surfaces, followed by sub-micron optical dimensional verification on Video Measuring Machines.
PTFE Compounds & Bondable Elastomer Grades
In-house custom polymer compounding tailored to the specific chemical, temperature, and mechanical parameters of your industrial application.
Virgin PTFE (Polytetrafluoroethylene)
Pure fluoropolymer with zero fillers. Highest chemical inertness across pH 0-14, excellent dielectric properties, and FDA 21 CFR 177.1550 compliance for pharmaceutical and food grade equipment.
Glass-Filled PTFE (15% / 25%)
Enhanced compressive creep resistance and lower wear rate under dynamic mechanical loads. Ideal for valve seats, guide rings, and pump pistons in slurry or high-pressure pipelines.
Carbon-Filled PTFE (25% / 33%)
Electrically dissipative formulation designed to eliminate static charge buildup in explosive chemical, oil & gas, and fuel transmission environments.
Bronze-Filled PTFE (40% / 60%)
Significantly higher thermal conductivity and dimensional stability under severe compressive pressure. Optimal for hydraulic guide bands, thrust washers, and heavy-duty wear rings.
Bonded Fluorocarbon (FKM / Viton®)
Provides ultimate resilience against hydrocarbons, aggressive aromatics, and synthetic oils with continuous permanent bonding to stainless steel substrates.
Bonded EPDM & NBR Compounds
Bonded to metal inserts for drinking water valves (German UBA KTW-BWGL) and general industrial pneumatic assemblies.
Target Industrial Applications & OEM End-Uses
Supplying critical fluid control and NVH isolation components to tier-1 manufacturers globally.
Need Custom PTFE or Rubber-to-Metal Bonded Tooling?
Submit your CAD dimensional drawings (.STEP, .IGES, .DWG) or compound specifications. Receive formal FOB Chennai / CIF destination port quotation within 24 hours.