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 5910-01-583-9850
NSN 5930-00-921-8368
NSN 5950-00-529-6871
NSN 6150-00-113-8619
NSN 5950-01-452-8190
NSN 6145-00-338-5645
NSN 6645-01-470-4688
NSN 6145-01-648-5556
NSN 5975-01-565-0656
NSN 5998-01-410-7203
NSN 6610-00-066-9353
NSN 5910-01-354-3204