Advanced 4BN-WD(SS) BSPP male screw plug with captive seal (ED-ring) hydraulic component. Engineered with precision parallel BSPP male threads, an engineered undercut shoulder seating an elastomeric captive ED seal ring, and a compact internal hex (socket head) drive to provide low-profile manifold port termination, positive elastomeric face sealing, and superior blowout resistance in high-pressure industrial hydraulic systems.
The 4BN-WD(SS) Series is a high-performance port termination component specifically engineered for flush, dead-end sealing of unused ISO 1179-1 / DIN 3852-11 parallel BSPP female threaded ports in hydraulic manifolds and valve blocks. Featuring precision CNC-machined BSPP parallel male threads, an integrated elastomeric captive ED-seal ring, and a low-profile internal socket (Allen) drive, this screw plug ensures dependable, zero-leak port isolation under severe dynamic pressure impulses and heavy mechanical vibration.
With optional zinc-nickel alloy surface treatment available to significantly extend service life, this hydraulic captive-seal screw plug ensures maximum longevity, structural safety, and leak-proof performance for heavy-duty industrial fluid power networks.
Engineered to work together with the product above.
