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 5985-01-032-5452
NSN 5855-01-027-1571
NSN 2925-00-653-7432
NSN 6685-00-409-4970
NSN 6610-00-197-7648
NSN 5835-01-629-2044
NSN 6320-01-162-5977
NSN 5965-01-033-9352
NSN 6130-01-119-0950
NSN 5910-01-654-3689
NSN 5930-01-367-2786
NSN 5935-00-107-8287