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The USA INDUSTRIALS BULK-RS-H40-23 is a stock-length Buna-N (nitrile) rubber sheet used for gasketing, sealing, vibration dampening, and general fabrication tasks across plumbing, HVAC, and industrial service work. Measuring 12 inches wide by 12 inches long, this sheet carries a Shore A durometer rating of 35 to 45, placing it in the soft-to-medium firmness range. Tensile strength is rated at 800 psi. The sheet is black and weighs approximately 0.5 pounds. Buna-N material provides solid resistance to oils, fuels, and hydraulic fluids, making it a dependable choice for cut-to-size gasket and seal fabrication in the field or shop.
This rubber sheet is suited for residential and light commercial applications where custom gaskets, pipe flange seals, equipment mounts, or vibration pads are needed. Plumbers, HVAC technicians, and maintenance mechanics commonly use Buna-N sheet stock to fabricate replacement gaskets on the bench or during service calls. Its temperature range of -20 degrees F to 170 degrees F covers most standard mechanical and plumbing service conditions. The 12 inch by 12 inch format provides a practical working blank for single-piece or low-quantity cuts.
Designed as a general-purpose Buna-N rubber sheet for fabricating custom gaskets, seals, pads, and liners in plumbing, HVAC, and industrial maintenance applications where nitrile rubber material is specified.
Use appropriate cutting tools such as a utility knife, die cutter, or hole punch to cut gaskets or seals to the required dimensions before installation. Always shut off and depressurize the system before replacing gaskets or seals. Verify that Buna-N is chemically compatible with the media being sealed, as nitrile rubber is not recommended for use with ketones, strong acids, or ozone-rich environments. Follow applicable codes such as the IPC or IFGC when fabricating seals for piping systems.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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