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 5905-01-570-9631
NSN 5999-01-582-7668
NSN 5895-01-299-1236
NSN 6130-01-088-2337
NSN 5985-00-866-6470
NSN 5925-00-752-8292
NSN 5910-01-084-1368
NSN 6135-00-334-4500
NSN 5999-01-284-5688
NSN 5999-00-596-1308
NSN 5905-01-199-1115
NSN 5950-01-457-7492