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 5855-01-528-0304
NSN 5895-01-380-0050
NSN 5945-00-104-4983
NSN 5905-00-948-7833
NSN 5905-00-143-8498
NSN 2925-01-058-1718
NSN 6610-01-399-7613
NSN 6685-00-596-8765
NSN 5945-00-001-7532
NSN 5960-00-340-3120
NSN 6130-01-393-7764
NSN 5930-01-426-9130