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 5975-01-057-4371
NSN 6645-01-025-1002
NSN 6240-01-088-0389
NSN 5935-00-572-7425
NSN 5920-01-442-4937
NSN 6135-01-499-9723
NSN 6620-01-564-7128
NSN 6685-00-885-8927
NSN 6240-01-610-4663
NSN 5920-00-072-1492
NSN 5930-01-139-4418
NSN 6220-01-532-6880