O-Rings and Basic Seals Suppliers

O-Rings & Basic Seals

Explore thousands of custom and commodity sealing solutions for multiple applications.

Learn More
Performance Seals Suppliers

Performance Seals

From spring-energized seals to glide and backup rings, we have the performance seal you need.

Learn More
Custom Molded and Gaskets Suppliers

Custom Molded & Gaskets

Explore our range of custom-molded seals and other components for your specific applications.

Learn More
Engineering Services

Engineering Services

From inspection and design support to coatings and cleaning, our engineers are ready to help.

Learn More

Why Marco Rubber & Plastics?

Marco Rubber & Plastics offers the most diverse material options in the market. We supply o-rings and seals in any size, material,
durometer and performance requirements. Custom material development and design are typically available at no cost.

Exceptional Service

Communicate directly with our dedicated team of experienced professionals empowered to find creative ways to deliver service solutions. Typical office hours M-F 8:30am-5pm EST and we respond to email in hours if not minutes.

Product Knowledge

The Marco sales team is backed by expert engineers available for on-demand conference calls to offer application specific material and design support to meet any sealing challenge.

Available Customization

We design and manufacture custom shapes and develop specialty materials to deliver a performance advantage. Custom size O-Rings, Square Rings, and X-Rings in almost every material are supplied without tooling fees.

Product Database

Our integrated O-Ring Inventory network allows us to have real-time access to in-stock materials and provide quotes quickly and accurately so you can be sure your order is on its way.

Specialized Materials

Over 3,000 specialized materials that deliver performance and price advantages for your complex sealing needs. We stock inventory for popular materials like Kalrez, Viton, Parker with many available for same-day shipping

Competitive Pricing

Our team is committed to finding you the right material at the right price for your sealing situation. We will find you cost-effective materials to support your temperature, chemical and sealing needs.

Trusted by Engineers and Purchasing Leaders at the World's Most Successful Companies

  • Over 14,000 customers/companies trust us with their sealing needs
  • Same day shipping is available for many of the sealing products in our inventory
  • We have more than 3,000 customized sealing material formulations
  • Most Quotes can be provided in under 60 minutes

Sealing Solutions by Industry

Every industry is unique. We understand the challenges you're facing and will match you with the best sealing solution for your success. Explore our industry expertise below.

Semiconductor, Solar, LCD
Learn More
Food, Water, Life Sciences
Learn More
Aerospace & Military
Learn More
Oil & Gas Refining & Exploration
Learn More
Chemical Handling & Processing
Learn More
Electronics - EMI Shielding
Learn More

Popular Sealing Material Families

We're proud to offer the world's largest inventory of readily-available and highly customized sealing solutions. Explore some of the most common sealing materials we offer here.

Industry Leading O-Ring Reference Guides

Looking for design guides and technical information? We've got you covered. Find size guides, analyses,
and more in our library of reference guides developed by our material experts.

O-Ring Material Selection Guide

Explore o-ring materials to compare temperature, performance, chemical resistance, abrasion, and more.

View Guide
O-Ring Size Chart Dimensions

Browse in-depth charts on o-ring and sealing product sizes to find the right seal for your applicaion.

View Guide
O-Ring Tolerances Guide

View inside diameter and cross section tolerance levels for o-rings in different size measurements.

View Guide
O-Ring Gland Design Guide

Groove design is critical to o-ring success. Learn key considerations and browse guides here.

View Guide
O-Ring Chemical Compatability

Browse and compare o-ring compatability ratings and costs with thousands of chemical types.

View Guide