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 5915-00-416-3823
NSN 5996-00-816-9320
NSN 5950-01-200-7281
NSN 6645-01-124-6277
NSN 6645-01-235-1601
NSN 6150-00-593-5199
NSN 5915-01-341-7935
NSN 5905-00-564-3099
NSN 6320-00-894-1644
NSN 5998-00-932-1607
NSN 6135-00-851-8575
NSN 6110-01-484-9328