Intek are the UK's leading independent distributors of high temperature, chemical resistant RTV silicone sealants and adhesives.

Contact us for friendly sales & technical advice from a family run company for over 25 years.


Threadlocking Adhesives

Food Grade Sealant

Engineering Adhesives

Electronics Assembly

Unit 20,

Atley Business Park,



NE23 1WP

Tel: 01670 734400

International: +44 1670 734400


Technical Support:

Intek Adhesives © All rights reserved

Home Heat resistant sealant for led lighting junction box

XTS 320 High temperature sealant offers excellent heat resistance for bonding and sealing on most industrial materials including glass, metals, carbon fibre and silicone rubber. XTS 320 has a NATO stock classification NSN 6850-99-519-6905.

Industrial applications include:

• Weatherproofing and insulating cable connectors & high voltage equipment

• Oil, chemical and high temperature sealant / gasket maker

• Sealing high temperature flues, ductwork and chimneys

• Non corrosive heat resistant sealing on aluminium and other metals

• Weatherproofing and coating offshore and pipeline components

Uncured Properties

Cured Properties


Orange / Tan

Specific Gravity:




Hardness Shore A:


Cure Time:

24 hours per 3mm

Tensile Strength:

28 kgf/cm2 ( 2.8 Mpa )

Tack Free:

15 minutes

Temperature Range:

-55 to + 320 C ( 350 intermittent )

Shelf Life:

12 months in dry conditions @ 20C

Enquire Download Technical Data File