Abstract: A gasket is described. The gasket comprises a sealing layer and a support layer. The sealing layer is formed from a resilient material which comprises a CEV component in a proportion of at least 25% w/w of the sealing layer. The CEV component is at least partially derived from dry CEV. A hydrolysis resistant polymer to improve the water resistance of the sealing layer is also provided in the proportion of less than 20% w/w of the sealing layer. Generally, the level of CEV falls within the range 25-80% w/w of the sealing layer. A method of producing a gasket is also described. The method involves applying a wet sealing layer dough to a support material, and drying the wet sealing layer dough on the support material. The solids content of the wet sealing layer dough prior to the drying step is in the range 30-80% w/w of the dough material.

Abstract: A gasket comprises a sealing layer formed from a resilient material which comprises particles of chemically-exfoliated vermiculite bonded together. The layer also comprises a hydrolysis-resistant polymer coupled to the vermiculite by a coupling agent. A further gasket comprises a sealing strip wound into a spiral. The sealing strip comprises a resilient layer comprising particles of chemically-exfoliated vermiculite. The sealing strip also comprises a flexible carrier strip to which said resilient layer is bonded.

Abstract: A sealing assembly with a first molded graphite ring of generally triangular cross section, one side of which is in use perpendicular to the longitudinal axis of a rotatable and/or slidable shaft, the surface of which is to be sealed in an axial direction against fluid leakage therealong, and a second side which is in use disposed parallel to said shaft to engage the inner wall of the housing surrounding said shaft.

Abstract: A material stock from which seals and packings may be formed is described; the material stock being relatively soft and compressible and cross section having a construction comprising a plurality of interlaced, as hereinbefore defined, flat section tapes having associated therewith a reinforcement. The tapes may include exfoliated graphite, paper, PTFE, mica, vermiculite as appropriate. The seal stock may have any desired cross sectional shape.