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. Specialty material development and design support are typically available at no cost.
 | Exceptional ServiceTalk to our experienced professionals to find creative product and service solutions. Typical office hours are M-F 8:30 am-5:00 pm EST. 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. |
 | Expert CustomizationWe work with you to tailor our products and services to match your requirements, or provide a fully custom solution. Get custom o-rings, square rings, and x-rings in nearly any material. |
 | Intelligent DatabaseOur integrated o-ring inventory network allows us to have real-time access to in-stock materials and provide fast, accurate quotes so you can be confident your order is en route. |
 | Specialized MaterialsWe offer 3,000+ materials that deliver performance and price advantages for your application. Popular materials like Kalrez, Viton, and Parker are in-stock, many with same-day shipping. |
 | Competitive PricingWhether you need a high-temperature, high-pressure, or chemical-resistance seal, our team is committed to finding the right material at the best possible price for your application. |
Connect With An Expert
- Trusted by 14,000+ customers/companies
- Same day shipping is available for many of the sealing products in our inventory
- 3,000+ custom sealing material formulations
- Most quotes delivered in less than an hour
- Expert application assistance available
Delivering Proven Performance for Multiple Industries
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 application.
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 Compatibility
Browse and compare o-ring compatibility ratings and costs with thousands of chemical types.
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