Toroidal seal

nitrileneoprene®silicone

Overview
Seal Master Corporation manufactures fabric‑reinforced, custom inflatable seals designed for controlled on‑demand sealing in demanding industrial applications. These seals use fully molded elastomeric construction with integrated fabric layers to control expansion and maintain geometry under pressure.

Key Features

• Fully molded elastomer body with integrated fabric reinforcement for consistent geometry
• Controlled expansion to prevent over‑extension and improve sealing repeatability
• Designed for repeated inflation cycles and precise force application
• On‑demand activation — seals only when pressurized
• Uniform contact pressure to compensate for surface irregularities and tolerances

How Inflatable Seals Work

• Installed deflated in a groove or channel
• A compatible inflation medium (air, water or other fluid) pressurizes the seal
• The seal expands to contact the mating surface and generate sealing force
• Inflation pressure correlates to applied sealing/compression force
• Seal deflates when pressure is released for easy access or cycling

Key Performance Factors

• Inflation pressure vs. sealing force — specify required pressure to achieve target force
• Media compatibility — select elastomer compatible with chosen inflation medium
• Cycle frequency and duty cycle — material and reinforcement selected for high‑cycle use
• Contact geometry, tolerances and surface finish — affects load distribution
• Operating temperature and chemical exposure — drive material selection
• Available installation space and groove design constraints

Types of Inflatable Seals

• Fabric‑reinforced inflatable seals — for high‑cycle, high‑precision applications
• Custom‑engineered profiles — matched to unique geometries and performance needs
• Non‑reinforced seals — suitable for simpler, low‑demand uses

Materials and Construction Options

• Common elastomers: EPDM (weather/ozone resistance), Silicone (high‑temperature flexibility), Viton® (chemical resistance), Nitrile (oil resistance), Neoprene (balanced properties)
• Fabric reinforcement controls expansion, prevents over‑expansion and extends service life
• Material selection driven by temperature, chemicals, mechanical stress and inflation medium

Applications and Typical Uses

• Industries: aerospace, pharmaceutical, food processing, water & wastewater, nuclear and other mission‑critical sectors
• Typical uses: aircraft canopies, tank seals, filling and bottling lines, oven and smokehouse doors, containment systems, assembly fixtures

Design, Engineering and Customization

• Tailored solutions based on application requirements and geometry
• Engineering consultation, prototyping and testing to validate performance
• Tools and resources available to support profile selection and specification

Installation and Maintenance Best Practices

• Verify groove design and fit before installation
• Follow specified inflation pressures to avoid over‑inflation
• Use inflation media compatible with the elastomer
• Inspect regularly for wear, environmental degradation and fabric exposure
• Design for serviceability and available installation space

Technical specifications

• Construction: fully molded elastomeric body with integrated fabric reinforcement
• Reinforcement: fabric layers to limit expansion and maintain geometry
• Inflation media: air, water or compatible fluids (ensure elastomer compatibility)
• Elastomer options: EPDM, Silicone, Viton®, Nitrile, Neoprene
• Design inputs: required sealing pressure, groove geometry, surface finish/tolerances, operating temperature and chemical exposure