| 摘要 |
<p>A sealing system (100) for forming an environmentally sealed joint with an elongate member (50) includes a tubular substrate (110), a pre-expanded cover unit, and a flowable sealant (130, 132). The tubular substrate (110) includes an integral guide feature (120) and defines a substrate bore (114) to receive a portion of the elongate member (50). The pre-expanded cover unit (102) includes a holdout (150) and a tubular cover sleeve (140). The holdout (150) includes a helically wound strip (152) forming a tubular holdout body (151) and a rip cord (158). The holdout body (151) defines a holdout passage extending axially therethrough. The tubular cover sleeve (140) is mounted on the tubular holdout body (151). The holdout (150) maintains the tubular cover sleeve (140) in a radially elastically expanded state. With the elongate member (50) positioned with a portion thereof extending from the tubular substrate (110) and a layer of the sealant (130, 132) mounted on an outer surface (116B) of the tubular substrate (110) and/or on an outer surface of the elongate member (50), the pre-expandable unit (102) can be mounted around the layer of sealant (130, 132) and the holdout (150) can then be removed from the tubular cover sleeve (140) by withdrawing the rip cord (158) through the holdout passage between the layer of the sealant (130, 132) and the holdout body (151) to remove the holdout body (151) and thereby permit the tubular cover sleeve (140) to radially contract about the tubular substrate (110) and the elongate member (50), and the guide feature (120) serves to prevent or inhibit the rip cord (158) from contacting the layer of the sealant (130, 132) as the rip cord (158) is withdrawn through the holdout passage.</p> |
