Precote.
Precote pre-applied thread lockers and sealants — solvent-free, dry to the touch, activated by thread engagement. Five grades covering non-reactive thread sealants and microencapsulated acrylate thread lockers. Applied by Bradley under ISO 9001:2015.
Five grades. Two product families within the line.
Precote 5 and 15 are non-reactive pure sealants — they seal without locking, and remain readjustable. Precote 30, 80, and 85 are microencapsulated acrylate lockers and sealers — they lock and seal, cure on thread engagement, and are not reusable. Selecting the right grade starts with this distinction.
Precote 5
Non-reactive pre-applied thread sealant rated from -76°F to 356°F. Water-based, dry to the touch, ready for assembly.
Precote 15
Non-reactive elastic pre-applied sealant for threads, flange heads, and rivets — rated to 390°F.
Precote 30
Medium strength microencapsulated pre-applied thread locker and sealant. Dry to the touch, acrylate-base, activated by thread engagement.
Precote 80
High strength microencapsulated pre-applied thread locker and sealant, rated to 340°F and 5760 psi.
Precote 85
High strength microencapsulated pre-applied thread locker with controlled torque tension — rated from -58°F to 338°F and 5760 psi.
Sealed without locking, or locked and sealed together.
The Precote family covers two distinct performance needs in one product line. Precote 5 and 15 are non-reactive coatings — they seal the thread against fluid migration without providing locking force, and the joint can be readjusted or disassembled without stripping the coating. These grades are appropriate when sealing is the requirement and locking is not.
Precote 30, 80, and 85 use a different mechanism. The microencapsulated acrylate coating sits dormant on the fastener until thread engagement at assembly crushes the capsules, releases the acrylate, and initiates room-temperature cure. The cured film locks the fastener against vibration loosening and seals the thread against fluid and gas migration. These grades are not reusable — the cure consumes the coating.
Within the locker grades: Precote 30 is medium strength for applications where some serviceability is needed. Precote 80 is high strength with 10-minute initial lock — the fast-cure, high-pressure grade for high-temperature applications. Precote 85 adds controlled torque tension on top of the Precote 80 specification — specified when installation torque must be precisely managed.
Technical & Safety Data Sheets.
| Product | Technical Data Sheet | Safety Data Sheet |
|---|---|---|
| Precote 5 | TDS · PDF ↗ | SDS · PDF ↗ |
| Precote 15 | TDS · PDF ↗ | SDS · PDF ↗ |
| Precote 30 | TDS · PDF ↗ | SDS · PDF ↗ |
| Precote 80 | TDS · PDF ↗ | SDS · PDF ↗ |
| Precote 85 | TDS · PDF ↗ | SDS · PDF ↗ |
