Success Starts with the Right Seal
Cheap seals are costly - in more ways than one. For more than 40 years, Marco Rubber & Plastics has been helping thousands of companies worldwide find the right sealing product for their application, and we're ready to help you. Talk to an application engineer today.
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O-Rings & Basic Seals
Explore thousands of custom and commodity sealing solutions for multiple applications.
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Performance Seals
From spring-energized seals to glide and backup rings, we have the performance seal you need.
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Custom Molded & Gaskets
Explore our range of custom-molded seals and other components for your specific applications.
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Engineering Services
From inspection and design support to coatings and cleaning, our engineers are ready to help.
Learn MoreWhy 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 ServiceCommunicate 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 KnowledgeThe 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 CustomizationWe 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 DatabaseOur 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 MaterialsOver 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 PricingOur 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.
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 GuideO-Ring Size Chart Dimensions
Browse in-depth charts on o-ring and sealing product sizes to find the right seal for your applicaion.
View GuideO-Ring Tolerances Guide
View inside diameter and cross section tolerance levels for o-rings in different size measurements.
View GuideO-Ring Gland Design Guide
Groove design is critical to o-ring success. Learn key considerations and browse guides here.
View GuideO-Ring Chemical Compatability
Browse and compare o-ring compatability ratings and costs with thousands of chemical types.
View Guide
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35 Woodworker's Way, Seabrook, NH 03874
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