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 6610-01-024-5360
NSN 5999-00-976-2937
NSN 6645-01-331-5674
NSN 5975-01-065-0467
NSN 5925-01-234-8312
NSN 5965-01-422-1392
NSN 5915-00-250-7912
NSN 5920-01-572-3242
NSN 5930-01-179-7178
NSN 4140-01-648-8257
NSN 6145-01-159-5792
NSN 5930-00-841-6857