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 6610-01-615-3050
NSN 5930-01-100-3818
NSN 6645-01-290-9428
NSN 6240-00-296-0488
NSN 5975-01-399-0113
NSN 5960-01-439-3731
NSN 6320-00-593-0379
NSN 6145-00-239-2143
NSN 5915-01-215-2159
NSN 6135-01-391-6515
NSN 6130-00-010-1042
NSN 5915-01-025-1362