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Applicant: Dresser-Rand Co
๐ SIMILAR VOLUMES
This patent describes a device for use as part of a centrifuge for biological samples. It is designed to allow fluid passage into and out of individual chambers of the centrifuge and provide thorough emptying of the chambers. It uses what are described as face seals but from the limited detail provi
as sealants and adhesives is fitted with a plastic guide bearing to replace previous metal bearings. The material used is 25% carbon-filled PTFE and a further feature is that the bearing may be fitted without tools.
seal has a moulded wave profile, or a series of semicircular arches that contact the groove wall. A number of different patterns are illustrated.
basic composition of the raw material is composed of 16-28 wt% of NBR, serving as the rubber; 4-8 wt% of an aramid fibre, serving as the reinforcing fibre; 10-20 wt% of a needlelike dolomite, serving as the reinforcing fibre; 8-20 wt% of silica particles, serving as the filler; and the balance, an i