IP68 Pre-applied Adhesive Sealing Bolt

IP68 bolt with pre-applied adhesive sealant: sealing is carried by the coated thread, with no separate gasket.

Key specifications

Installationthreaded in, coating filling the clearance
StandardGB/T 197, GB/T 4208 (IP rating)
Typical substratehousing threads and end caps
Key inspectionsleak tightness, coating coverage, prevailing torque
Drive TypeTorx Plus

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Product overviewOverview

A pre-applied sealant targets the thread clearance. The adhesive fills the thread clearance as the bolt is driven and cures in the joint. Because the seal sits in the thread rather than under the head, surface finish of the bearing face matters less, but the coating must survive the driving torque without being scraped off the first threads.

installed by threaded in, coating filling the clearance.

Key featuresFeatures

Seal in the thread, so bearing-face finish is less critical.
Stainless or nickel-plated steel for housing and end-cap joints.
Coating fills the helical thread clearance, blocking weepage along the thread.
Provides locking as well, so no separate locking element is needed.

Typical applicationsApplications

Hydraulic valve and pump bodies
Pneumatic end caps
Outdoor equipment junction cavities

Selection notesSelection

Confirm that the engaged length is fully coated; the first two threads carry most of the sealing and are also where scraping occurs.

Frequently asked questionsFAQ

Does pre-applied sealant work on a reused bolt?

Normally not. The coating is deformed during the first assembly and does not recover, so a reused bolt loses its seal. Sealing bolts are treated as single-use unless the supplier states otherwise.

What matters during installation of the IP68 Pre-applied Adhesive Sealing Bolt?

Thread it in so the coating fills the thread clearance. Seal in the thread, so bearing-face finish is less critical.

Specifications

Drive Type	Torx Plus
Standard	GB/T 197, GB/T 4208 (IP rating)
Installation	threaded in, coating filling the clearance
Typical substrate	housing threads and end caps
Key inspections	leak tightness, coating coverage, prevailing torque

Manufacturing and inspection

Breakaway torque sampled to ISO 2320 where locking is also specified.Material certificates and dimensional records accompany each lot; material and dimensional records are supplied per batch.