Steam-Resistant Silicone Gaskets for Autoclaves and Sterilisers

Skytech Ultrafab Silicone Autoclave Gaskets are high-temperature elastomeric seals engineered for pharmaceutical and food-industry steam autoclaves, pressure sterilisers, and SIP (Steam-In-Place) vessel connections. Manufactured from FDA 21 CFR-compliant platinum-cured silicone rubber, they maintain their sealing force, dimensional stability, and surface integrity through hundreds of repeated sterilisation cycles at 134°C and 2 bar — without the compression set, hardening, or cracking that limits the life of standard rubber and EPDM gaskets in autoclave service.

What Is a Silicone Autoclave Gasket?

A Silicone Autoclave Gasket is a precision-moulded or extruded silicone rubber seal designed to maintain a steam-tight joint between autoclave door and vessel body throughout repeated steam sterilisation cycles. Standard rubber compounds suffer progressive compression set in autoclave conditions — the rubber gradually loses elasticity, reducing sealing force and eventually allowing steam bypass. Platinum-cured silicone retains its elasticity and dimensional stability through far more sterilisation cycles before replacement is required, reducing maintenance frequency and the risk of seal failure during sterilisation.

Features and Benefits

• Platinum-Cured Silicone: Platinum catalyst curing system produces a silicone compound with very low extractables, superior compression-set resistance, and excellent long-term performance in repeated steam sterilisation — superior to peroxide-cured alternatives for pharmaceutical contact use
• Zero Compression Set: Platinum-cured silicone retains elastic recovery after each compression cycle — seal force does not diminish progressively over repeated autoclave uses, maintaining reliable steam-tight performance
• 134°C / 2 Bar Rated: Continuous service at standard autoclave conditions of 134°C and 2 bar saturated steam — withstands thousands of sterilisation cycles without degradation
• FDA 21 CFR Compliant: Material complies with FDA 21 CFR 177.2600 food-contact and pharmaceutical-contact regulations — safe for use in product-contact sterilisation equipment
• All Standard Profiles: Flat sheet gaskets, O-ring profiles, D-section door seals, and custom extrusion profiles for door frames, pipe connections, and vessel flanges in all standard autoclave makes
• Colour-Coded Options: Translucent (standard), red, and blue silicone available — colour coding assists identification of gasket grades and replacement intervals in multi-autoclave facilities

Technical Specifications

Applications

• Pharmaceutical Autoclaves: Door and flange seals for horizontal and vertical pharmaceutical autoclaves in injectable, sterile device, and GMP pharmaceutical manufacturing facilities
• SIP Process Connections: Silicone gaskets for steam-in-place (SIP) pipe flange connections, sight glass seals, and instrument connections on pharmaceutical process vessels
• Food Industry Retorts: Door seals for food retort and high-pressure processing (HPP) vessels in canned food, beverage, and ready-meal sterilisation operations
• Hospital Autoclaves: Door gaskets for hospital central sterile supply department (CSSD) autoclaves and steriliser trolley door seals — long cycle life reduces consumable replacement frequency
• Laboratory Sterilisers: Benchtop autoclave door seals and flask sealing gaskets for microbiological and pharmaceutical laboratory sterilisation equipment

Why Choose Skytech Ultrafab for Silicone Autoclave Gaskets?

• Platinum-Cure for Long Life: Platinum-cured silicone lasts significantly longer in autoclave service than peroxide-cured alternatives — documented cycle life advantage reduces replacement frequency and maintenance cost
• GMP Documentation Package: FDA 21 CFR compliance certificate, platinum-curing confirmation, and autoclave cycle testing data supplied for pharmaceutical equipment qualification and validation files
• All Autoclave Models Covered: Standard and custom profiles for Getinge, Steris, Tuttnauer, Fedegari, Telstar, and all other major autoclave OEM door geometries — specify the autoclave model and gasket location
• Hardness Selection: Correct Shore A hardness specified for each gasket type — door frame seals require different hardness than flange gaskets to achieve optimum sealing at the operating compression load
• Fast Replacement Supply: Standard profiles in 5–7 working days; custom-moulded profiles in 10–14 working days — autoclave gaskets are maintenance consumables requiring rapid replacement availability