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 5855-01-003-7102
NSN 5835-01-067-6619
NSN 5950-01-147-3878
NSN 6320-00-213-0477
NSN 6320-01-310-8068
NSN 5855-00-791-5000
NSN 5975-01-321-6558
NSN 5985-01-116-2295
NSN 5930-00-588-2369
NSN 5905-00-245-3412
NSN 5925-01-459-6856
NSN 6620-00-004-5466