O-Ring Groove Dimensions DIN 3771

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About Us
Learn more about Hi-Tech Seals, our core values, and our commitment to delivering effective sealing solutions to our customers.
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Corporate Responsibility
Our commitment to our Code of Conduct, ethical standards, and responsible sourcing practices guide our operations.
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Markets We Serve
With decades of experience, technical expertise, and in-house capabilities, we deliver sealing solutions tailored to customer applications across diverse markets.
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Careers
Join us and be part of a collaborative team that supports your growth and values your contributions.
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Our Brands
WolCar™ Carbide
KasPex™ PEEK
TechCera™ Ceramic
BoKure™ Urethane
BoKure™ GHOST
AraLite™ Compressed Sheet
RyFlor™ ePTFE
Super Hi-Glyde O-Ring Lubricant
WolCar™ Carbide
Superior-performing cemented tungsten carbide materials offering extreme toughness, hardness, and exceptional wear resistance for high-stress environments. WolCar™ can be manufactured into virtually any shape and size to suit specific applications. 
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KasPex™ PEEK
High-performance thermoplastic PEEK materials designed for demanding applications that require outstanding mechanical strength and chemical resistance, even at high temperatures. They enhance the performance and reliability of machined parts in countless applications across numerous markets and industries.  
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TechCera™ Ceramic
Advanced lightweight ceramic materials with excellent mechanical properties and extreme hardness. TechCera™ provides outstanding resistance to chemicals, corrosion, wear, and abrasion, making it ideal for manufacturing precision components that can withstand extreme environments.
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BoKure™ Urethane
BoKure™ urethane is a high‑performance material engineered for demanding industrial conditions. It offers long‑lasting durability and is an excellent alternative to rubber, plastic, and metal in applications where abrasion, impact, and harsh chemicals are a concern.
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BoKure™ GHOST
Degradable elastomer compound formulated to withstand harsh, corrosive downhole oil and gas environments, including aqueous brine conditions. GHOST breaks down into non-binding, non-clogging particles that do not require recovery, eliminating the need for them to be drilled out.
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AraLite™ Compressed Sheet
General-purpose gasket material with high-strength aramid and inorganic fibres reinforced with a nitrile binder. AraLite™ offers outstanding thermal, mechanical, and chemical properties along with high compressibility that enables a tight seal even on irregular surfaces. 
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RyFlor™ ePTFE
Critical service gasket material made from ePTFE that does not degrade or deteriorate even in aggressive chemical and extreme temperature conditions. RyFlor™ has proven success in sealing flanges in demanding environments where leakage could result in serious hazards, supporting safety and reliable operations.  
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Super Hi-Glyde O-Ring Lubricant
FDA-compliant silicone-based lubricant that helps protect seals and speed up the installation process. Super Hi-Glyde™ has high resistance to wear, pressure, rust, and corrosion. It helps protect O-rings and seals from ozone degradation, cracking, abrasion, cutting, and pinching. 
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Products
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Seals
Gaskets
Metal Components
Custom Molded Rubber Parts
Lubricants
Tools & Accessories
Seals
Choose from our wide range of high-performance sealing products engineered for reliability across diverse applications and industries. Available in various profiles, sizes, and materials to meet specific requirements.
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Gaskets
We provide high-quality gasket solutions engineered for reliable sealing in diverse applications and environments, complemented by a selection of related accessories.
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Metal Components
Our range of precision-engineered metal components delivers superior resilience to meet the demands of the most challenging applications.
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Custom Molded Rubber Parts
Custom molded rubber parts are elastomer components engineered to meet precise and application-specific performance requirements that standard manufacturing methods cannot achieve.
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Lubricants
Formulated to reduce friction, wear, corrosion, and facilitate ease of assembly and disassembly, our specialty lubricants help increase the performance and extend the service life of components and equipment.
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Tools & Accessories
Complementing our offerings is a selection of tools and accessories to support your operational requirements.
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Featured Solution

Seal Kits
Consolidates seals and related components into one package, reducing downtime and simplifying reordering.
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Mechanical Face Seals
Engineered to deliver superior protection against contaminants in extremely harsh environments.
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Manufacturing
Rapid Seal Machining
Rapid Gasket Machining
Cast Urethane Manufacturing
Spliced & Vulcanized O-Rings
Custom Molded Rubber
Rubber Extrusions
Rapid Seal Machining
Our Rapid Seal machining team can draft, design, and machine standard, replacement, or prototype components. We can also modify standard profile designs to optimize seal performance when necessary. With industry-leading turnaround times, Rapid Seal helps keep projects on track.
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Rapid Gasket Machining
Rapid Gasket delivers precision-cut gaskets for both standard and custom requirements. Using advanced knife-cutting technology, we produce gaskets ranging from simple to complex designs in a variety of materials and thicknesses.
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Cast Urethane Manufacturing
We manufacture cast urethane products for applications across a wide range of industries. Our team of cast urethane specialists can assist with the design, development, and production of both simple and complex components using our BoKure™ family of urethane compounds.
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Spliced & Vulcanized O-Rings
Our Spliced & Vulcanized O-Rings are a preferred choice for static applications, offering an ideal solution for customers with unique size requirements or those needing small quantities without long lead times.
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Custom Molded Rubber
We specialize in custom-moulded solutions for diverse applications, creating high-performance products through a collaborative process from design to production. With our experience and capabilities, we deliver high-quality parts tailored to specific requirements.
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Rubber Extrusions
Hi-Tech Seals offers a range of standard and custom extruded rubber profiles. We work with customers to deliver the profile configuration and material combination that best meets the demands of the application.
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Services
Seal Kits
Custom Labels
Laser Engraving
PTFE Colour Coating
Vendor Management Inventory
Seal Analysis Lab
Seal Kits
We consolidate O-rings, industrial seals, and related components into custom seal kits built to match specific cylinder and equipment configurations, reducing rebuild time and simplifying parts sourcing across multiple applications such as hydraulic, pneumatic, valve, and more.
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Custom Labels
Our custom labeling service reduces time and cost of relabeling, makes reordering easier, and increases brand visibility.
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Laser Engraving
Laser engraving adds identification marks to rubber, plastic, and metal parts. These marks improve product identification, enhance traceability, strengthen branding, and make reordering easier.
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PTFE Colour Coating
Customers ask to have their PTFE O-Rings coloured for quick and easy identification once the O-rings have been installed into their application to see differences between sizes and or materials.
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Vendor Management Inventory
The VMI program maintains optimal inventory levels through regular checks, a min/max system, and timely replenishment. This reduces safety stock requirements, eliminates usage logging and manual checks, and saves procurement time.
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Seal Analysis Lab
The Seal Analysis Lab combines advanced inspection, material identification, failure analysis, and other specialized testing. Using state-of-the-art equipment, our team ensures seals meet specifications, determines causes of failure, and supports our high standards in quality control.
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News & Events
Tradeshows 2026
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Tradeshows 2026
Explore upcoming tradeshows Hi-Tech Seals will be exhibiting.
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Blogs
Learn more Hi-Tech Seals’ product and service information, helpful tips, and trusted industry insights.
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Case Studies
Proven examples showcasing how we delivered expert solutions tailored to unique application requirements.
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Resources
Seal Catalogue
Literature
Chemical Compatibility
Material Summary Guide
Size Charts
Seal Catalogue
Browse our latest Seal Catalogue for a technical overview of our seals and related products, complete with product specifications, material options, and usage recommendations to support your application requirements .
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Literature
Access our library of brochures, catalogues, product and material literature, and industry-specific solutions.
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Chemical Compatibility
Evaluate the compatibility of your material with different chemical environments using our Chemical Compatibility reference.
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Material Summary Guide
Use our Material Summary Guide to learn more about key material properties and their compatibility with various media.
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Size Charts
Use our Size Charts to find standard O-ring dimensions, including inner diameter, outer diameter, and cross-section, in both imperial and metric.
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