A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6130-00-433-4873
NSN 2925-00-450-7783
NSN 5996-01-115-8509
NSN 5945-01-230-0792
NSN 6320-00-593-0379
NSN 5910-01-360-8750
NSN 6130-00-850-6613
NSN 5905-01-396-4930
NSN 5925-00-636-5683
NSN 5945-00-774-9253
NSN 6240-01-365-7996
NSN 7035-00-455-7666