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 5925-01-512-2268
NSN 6645-01-557-4608
NSN 6320-00-994-0179
NSN 6650-01-088-4317
NSN 5996-01-412-1396
NSN 6685-01-141-7034
NSN 5925-01-017-8150
NSN 5985-01-117-6096
NSN 5910-01-067-8361
NSN 5975-01-534-1146
NSN 6645-01-433-6999
NSN 5975-00-052-4591