| 摘要 |
A seal between a pair of relatively axially movable coaxial components (12, 14) is provided by a spring energised plastic seal (22) which is located axially with respect to the outer component (14) to separate a high pressure fluid area from a low pressure fluid area, the spring energised plastic seal (22) has a plastic ring (24), the plastic ring (24) defining a body portion (26) and a pair of sealing elements (28), the sealing elements (28) extending coaxially to the high pressure side of the body portion (26) and being spaced radially by spring means (30), into sealing engagement with opposed surfaces of the two components (12, 14), a projection (24) extending axially from the low pressure side of the body portion (26) adjacent the external diameter thereof, said projection (34) engaging an axial projection on the outer component (14) so that engagement thereof will support the plastic ring (24) radially. <IMAGE> |
