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 5910-01-144-9396
NSN 5996-00-433-8371
NSN 6135-01-290-6487
NSN 5895-00-405-6995
NSN 6130-00-421-3157
NSN 6645-00-975-2103
NSN 6320-00-242-3300
NSN 2925-01-303-5266
NSN 6220-01-085-8199
NSN 5998-00-809-3566
NSN 6145-00-431-8376
NSN 6105-01-278-9220