Custom Rectangular Gaskets — Cut to Your Exact Length and WidthRectangular gaskets are among the most common sealing components in industrial and mechanical applications. Whether you need a flat face gasket for a square flange, a sealing pad for a valve cover, or a custom spacer for machinery, we cut them to your exact dimensions from sheet rubber stock.Available materials EPDM — for water, HVAC, outdoor applications Neoprene — general-purpose, oil and water resistant Silicone — for high-temperature and food-contact applications Buna-N (Nitrile) — for oil, fuel, and hydrocarbon environments Natural Gum Rubber — soft, conformable, general sealing Cork Rubber — vibration damping, oil-resistant sealing SBR — economical general-purpose sealing Available thicknesses: 1/32", 1/16", 3/32", 1/8", 3/16", 1/4"How to measure your rectangular gasketMeasure the outer length and outer width. If your gasket has a center cutout (making it a rectangular ring), also measure the inner length and inner width. Enter all four dimensions in the quoter above.Common applications Square and rectangular flange sealing Machinery base pads and vibration isolators Valve cover gaskets Tank and enclosure lid seals HVAC duct connections We laser-cut your gasket from quality sheet rubber and ship from Orange, CA the one-business-day you order.Frequently asked questionsWhat’s the largest rectangular gasket you can cut?We can cut up to approximately 24" × 36" in a single piece. Need something larger? Contact us — we may be able to cut in sections.Can I order a rectangle with holes or cutouts?Yes — use the DXF upload page to upload your drawing with all cutouts included.How do I know which material to choose?The most common choices: EPDM for water and outdoor use, neoprene for oil-and-water environments, silicone for temperatures above 300°F or food contact, Buna-N for petroleum oil and fuel. Still unsure? Contact us and we’ll recommend based on your application.. Large orders may take longer.
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