O-RingO-Rings for sealing membranes from confining fluid and sample. Neoprene. 12/pkg. 35mm, 1.4" O-Ring— HM-4182.14 38mm, 1.5" O-Ring— HM-4182.15 50mm, 2.0" O-Ring— HM-4182.20 70mm, 2.8" O-Ring— HM-4182.28 100mm, 4.0" O-Ring— HM-4182.40 150mm, 6.0" O-Ring— HM-4182.60 |