SW 825 — Oil-tolerant thread sealant

SW 825 is recommended for:

• Pneumatic and hydraulic fittings on railway compressors

• Oil-contaminated threads

• Threaded couplings to be locked and sealed in a reversible manner

• Systems subject to thermal shocks and vibration

 
Also suitable for fuels, engine oils, refrigerants, brake fluids and 50% water/glycol. For applications on plastics or paints, request an evaluation from BBTS technical support.

Composition
Anaerobic methacrylate resin

Colour
Blue

Viscosity at 25°C
1700–9000 mPa·s (thixotropic)

Coefficient of friction
≈ 0.10

Specific gravity
1.05 g/ml

Detection
UV-fluorescent

Flash point
100°C

Shelf life
1 year at 25°C

Max. thread diameter / Joint tolerance
M36 / 0.25 mm

Handling time
10–20 minutes

Functional cure
1–3 hours

Full cure
3–6 hours

Breakaway torque (ISO 10964)
18–23 Nm

Prevailing torque (ISO 10964)
9–16 Nm

Shear strength (ISO 10123)
9–13 N/mm²

Temperature resistance
−55°C / +200°C (up to +250°C for short periods)

Thoroughly clean the surfaces. Apply SW 825 until the thread is completely filled. Assemble normally.

Disassembly can be facilitated by heating the joint to 150–250°C.

Remove cured residues mechanically and finish with acetone.

The product may damage paints and elastomers and is incompatible with some thermoplastics (risk of stress cracking).

For safety information, refer to the Safety Data Sheet (SDS) available on request.

The product can be ordered in the following packaging:

• 50 ml bottle – box of 10 pcs

TDS - SW 825 v.1.01 - ITA

TDS - SW 825 v.1.01 - ENG