When seals are needed for chemical resistance and thermal stability, PTFE gaskets (Teflon) are a superior solution. Arizona Sealing Devices is a trusted supplier and distributor, and we meet the qualifications required by military and defense with our ISO 9001:2015 and AS9120B certifications, and NIST 800-171 and DFARS compliance.
Since 1989, we’ve been providing expert material guidance for PTFE, which is used extensively for gaskets. Learn more about it and what we offer, below, or contact us with any questions.
PTFE Gasket Standards, Specifications & Compliance At Arizona Sealing Devices
We ensure that the products we supply meet your strict regulatory and dimensional requirements:
ASTM F104 Material Classification
Our supplier network can provide PTFE gaskets that align with ASTM F104 classifications for non-metallic gasket materials, ensuring standardized physical properties.
ASME B16.21 Flange Dimensions
We supply Teflon gaskets dimensionally suited for standard ASME B16.21 pipe flanges, available in standard ring and full-face profiles for easy integration into existing piping systems.
FDA Food-Contact Compliance
For the food & beverage and pharmaceutical industries, we offer virgin and ePTFE gaskets that comply with FDA food-contact regulations, ensuring safe use in sanitary processing.
AMS 2817 and Mil-STD 130 Compliant Packaging
Arizona Sealing Devices is compliant with the packaging and labeling requirements from the military and defense sector.
Types of PTFE Gaskets
Different applications require different material properties. We supply the following primary grades of PTFE gaskets:
Virgin PTFE
Virgin PTFE gaskets contain no fillers or additives. They offer the highest degree of chemical resistance and electrical insulation properties. It is also FDA-compliant for food and pharmaceutical use. Virgin PTFE is best suited for stable, tightly controlled bolt-load environments.
Filled PTFE
To reduce cold flow and improve mechanical strength, PTFE can be blended with fillers such as glass, carbon, or bronze. Filled PTFE gaskets offer chemical resistance as well as enhanced durability, better wear resistance, and improved performance under high pressures.
Expanded PTFE (ePTFE)
Expanded PTFE (ePTFE) is a highly conformable, multi-directional fibrous form of PTFE. It has the same chemical resistance as virgin PTFE but drastically reduces creep and cold flow. ePTFE is ideal for fragile, glass-lined, or uneven flanges that cannot handle high bolt loads.
Properties and Benefits of PTFE Gaskets
Creep, Cold Flow, and Bolt Load
When specifying a PTFE gasket, design engineers must account for compressive load. Virgin PTFE can deform over time under continuous pressure, which may require periodic bolt tightening. Using filled PTFE or ePTFE can mitigate this issue, allowing for secure sealing at varying bolt loads while preserving the structural integrity of the gasket.
Chemical Resistance and Temperature Range
PTFE gaskets provide unmatched resistance to nearly all industrial chemicals, acids, and solvents (with exceptions like molten alkali metals). They operate reliably across a wide temperature range, remaining stable up to 500°F (260°C).
Common Applications and Industries that Utilize PTFE Gaskets
Because of their exceptional inertness and thermal stability, Teflon gaskets are highly sought after in demanding sectors. Common industries we serve include:
- Military & Defense: Utilized in a wide range of applications from fuel and hydraulic systems to radar housings.
- Food & Beverage: Providing non-toxic, non-contaminating seals for processing equipment.
- Pharmaceutical and Medical: Ensuring sterile, highly pure sealing environments.
- Chemical Processing: Sealing pipe flanges, valves, and pumps handling highly corrosive media.
Request a Quote for PTFE Gaskets for Your Next Project
Finding the right material for harsh chemical and high-temperature environments is critical to maintaining operational safety and efficiency. We offer competitive pricing, dependable delivery, and honest customer service to ensure you get exactly what you need. Contact our team today or request a quote on PTFE gaskets for your application.
Frequently Asked Questions
What information is needed to quote a custom PTFE gasket?
To ensure accurate sourcing, you need to provide the Inner Diameter (ID), Outer Diameter (OD), required thickness, material grade (virgin, filled, or ePTFE), and any other specific compliance requirements.
Do you keep Teflon gaskets in stock?
Every purchase with Arizona Sealing Devices is a custom part made to your exact dimensions. We work directly with our manufacturing partners to fulfill your specific requirements upon request.
What are your standard lead times?
Our general lead time is 2-10 weeks, depending on the specific gasket type and order volume.
What quality certifications do you hold?
As a trusted supplier, we are ISO 9001:2015 and AS9120B certified, and NIST 800-171 and DFARS compliant. Our packaging is AMS 2817 and Mil-STD 130 compliant.