Vacuum O-Ring Kits
Vacuum O-Ring Kits
Product Overview
Polypac Vacuum O-Ring Kits are curated sets of seals designed specifically for vacuum service, offering leak-tight performance across a wide range of pressures and temperatures. Each kit contains dimensioned O-rings and ancillary seals for common flange standards and pump interfaces, enabling rapid maintenance and field repairs while minimizing downtime.
Materials & Performance
Our kits include O-rings made from vacuum-grade materials such as FFKM (perfluoroelastomer), FKM, silicone, and specially compounded NBR and EPDM variants. Polypac formulates compounds to reduce outgassing and gas permeation, improving vacuum hold times and contamination control—critical for laboratory, semiconductor, and scientific applications.
Custom Solutions & Manufacturing
Backed by a 10,000 m² facility and 8,000 m² production area, Polypac offers custom Vacuum O-Ring Kits tailored to unique specifications. From bespoke sizes and mixed-material kits to branded packaging and inventory-ready assortments, our manufacturing capabilities scale from prototype batches to large OEM runs.
Quality Assurance & Testing
Polypac maintains rigorous quality control with advanced testing equipment and traceable production records. Kits are inspected for dimensional accuracy, hardness, and cleanliness; selected materials undergo thermal aging and vacuum compatibility testing to meet demanding application standards.
Applications & Industries
Typical uses for Vacuum O-Ring Kits include high-vacuum chambers, pumps, analytical instruments, semiconductor manufacturing, aerospace systems, and scientific research. Our kits support preventive maintenance, spare-part management, and emergency repairs where reliable sealing directly affects system performance.
Why Choose Polypac
Founded in 2008 and originating from filled PTFE expertise, Polypac combines material science, collaborative research with universities, and industry-grade production to deliver dependable vacuum sealing solutions. Contact Polypac for consultation, custom quotes, and rapid fulfillment of Vacuum O-Ring Kits tailored to your operational needs.
Vacuum O-Ring Kits Display
How can I prevent seal damage during installation?
Use Tools: Always use dedicated installation tools (e.g., picks, cones, guides). Lubricate: Always lubricate the seal and the contact surface. Protect Sharp Edges: Cover sharp threads and edges with tape or use an installation sleeve. Check the Groove: Ensure the installation groove is clean, deburred, and undamaged.
What is the difference between NBR and FKM materials?
NBR (Nitrile/Buna-N): A general-purpose, cost-effective material with excellent resistance to petroleum-based oils and fuels. It has a standard temperature range of -30°C to +100°C (-22°F to +212°F). FKM (Fluoroelastomer/Viton®): A premium material with excellent resistance to high temperatures (up to 200°C+), chemicals, and oils. It is used in more severe environments but is more expensive than NBR.
What is the difference between a static seal and a dynamic seal?
A Static Seal is used between two surfaces that do not move relative to each other (e.g., pipe flanges, end caps). O-rings and gaskets are common static seals. A Dynamic Seal is used between surfaces that do move (e.g., piston and cylinder, rotating shaft). Rod seals, piston seals, and rotary shaft seals are designed for this purpose.
What does "AS568" mean?
AS568 is the Aerospace Standard that defines the dimensions for over 360 standard O-ring sizes. It is the most widely accepted sizing system in North America and globally. An AS568 number (e.g., AS568-214) specifies a precise inside diameter and cross-section.
How do I choose the right material for my sealing application?
Material selection depends on four key factors: Media: What fluid or gas will the seal contact? (e.g., petroleum oil, water, chemicals, steam) Temperature: What is the minimum and maximum operating temperature? Pressure: What is the system's operating pressure? Are there pressure spikes? Application: Is it a static, dynamic, or rotary seal? Example: NBR (Buna-N) is excellent for standard hydraulic oil, while FKM (Viton®) is needed for high temperatures or aggressive chemicals.
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