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 6145-00-898-0219
NSN 5945-00-862-3979
NSN 2925-01-345-7433
NSN 6645-00-467-6094
NSN 5990-00-343-4465
NSN 5985-00-355-7611
NSN 5925-00-839-7879
NSN 7035-01-623-4987
NSN 5960-01-170-4057
NSN 6685-01-110-7398
NSN 2925-01-168-6253
NSN 5990-01-288-7393