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 5950-01-652-2646
NSN 4140-01-222-2140
NSN 5985-01-250-6158
NSN 6240-00-109-5914
NSN 6645-01-538-0425
NSN 5920-01-223-0118
NSN 6685-00-556-5407
NSN 7035-01-318-3158
NSN 5975-00-351-6114
NSN 5935-00-006-9081
NSN 5915-01-453-0200
NSN 5996-00-700-1182