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 5975-01-090-0802
NSN 5935-01-267-4813
NSN 5999-01-123-9685
NSN 5990-01-216-1276
NSN 5965-00-378-3403
NSN 6150-00-888-1934
NSN 6135-00-269-5843
NSN 5925-00-103-6469
NSN 6135-00-809-2148
NSN 6645-00-435-5610
NSN 6610-01-512-2025
NSN 5895-01-314-3593