| 摘要 |
<p>Pressure hardware for a seal block assembly (50) used to form a modular, annular seal around a conduit passing through a wall, the assembly including elastomer seal blocks (21A-21D) joined in an annulus around the conduit, the seal blocks (21A-21D) having pressure bolt apertures (22) parallel to the conduit; the seal blocks are axially compressed and radially expanded to form the seal. The pressure hardware is in sets each including a bolt (23), a matching nut, and a first molded resin pressure plate having a recess large enough for freely rotatably seating the bolt head (25), with peripheral access for a wrench; a washer (65) is rotatably positioned in the bottom of the recess, which is deep enough so that the bolt head does not project substantially. The bolt rod (23A-23C) extends through a bolt-receiving aperture in the first pressure plate. A second molded resin pressure plate has a socket complementary to the nut, which seats in the socket non-rotatably relation and a bolt-receiving aperture allow the bolt rod to engage the nut; in one form, the socket has crush ribs to hold the nut firmly in place. In another embodiment, the second molded resin pressure plate has a threaded bolt-receiving aperture in which the bolt rod engages. Also disclosed are resin caps that inhibit corrosion of the metal parts of the assembly. <IMAGE></p> |
