Everkem Intumescent Firestop Collars

The Everkem Diversified Products Intumescent Firestop Collar CLR-1 is a 1.5" one-piece fire protection device designed for plastic pipe and conduit penetrations through fire-rated floor and wall assemblies. This ready-to-use collar features intumescent technology that expands when exposed to heat, sealing off penetrations to maintain fire ratings. The collar meets ASTM-E814 standards and carries UL classification for reliable fire protection performance.

Installation is straightforward with this pre-manufactured collar system, reducing labor costs compared to field-applied alternatives. The intumescent material activates at elevated temperatures, expanding to close off the penetration and prevent fire and smoke passage. Made in the USA, this collar incorporates EcoSeal technology for enhanced environmental performance while maintaining full compliance with fire safety codes. The UL classified design ensures consistent performance in fire-rated assemblies.

These collars work effectively in commercial and residential construction where plastic piping systems penetrate fire-rated walls or floors. The 1.5" size accommodates standard small-diameter pipes and conduits commonly found in electrical and plumbing installations. The collar integrates seamlessly with other fire inspection compliance systems to maintain building fire ratings.

Technical Details

Key Specs

Device type	Steel collar with intumescent strip
Fire rating	Up to 3 hours (ASTM E814)
Pipe sizes	1.5", 2", 3", and 4" nominal plastic pipe
Activation temperature	Expansion begins at 375°F (190°C); greatest at 575–1100°F
VOC content	< 10 g/L

Full Specifications

Typical Physical Properties

Materials	Steel collar with intumescent strip
Asbestos fillers	None
Solvents	None
Hazardous ingredients	None
Activation of intumescence	Expansion begins at 375°F (190°C); greatest at 575°–1100°F (302°C–593°C)
ASTM E814	Tested — Standard Test Method for Fire Tests of Penetration Firestop Systems

Available colors: Red

Applications

• Multi-family and commercial construction
• Applications where up to a 3-hour fire-rating is required
• Suitable for 1.5", 2", 3", and 4" nominal plastic pipes
• Closed and vented plastic pipes
• Compatible with ABS, FRPP, PVC, and CPVC pipe

Advantages

• Tested to ASTM E814
• Intumescent expansion seals openings as plastic pipe deteriorates under fire
• Up to 3-hour fire-rating
• Easy installation with included fastening tabs
• Chemically compatible with PVC, CPVC, ABS, PEX tubing and most pipe fittings

Limitations

• Not for use in outdoor environments with long-term exposure to rain or saltwater spray

Compliance & Standards

CSI specified divisions

• 07 84 00 — Firestopping
• 07 84 13 — Penetration Firestopping
• 07 84 13.13 — Penetration Firestopping Devices
• 07 84 16 — Annular Space Protection
• 22 00 00 — Plumbing

Applicable standards

• ASTM E814 — Standard Test Method for Fire Tests of Penetration Firestop Systems

EcoSeal (low-VOC) compliance

• V.O.C. Content: < 10 g/L

Sizes & Part Numbers

Part #	Description	Packaging	Color
CLR-1	Intumescent Firestop Collar — 1.5" (38 mm)	12 collars/case	Red
CLR-2	Intumescent Firestop Collar — 2" (50.8 mm)	12 collars/case	Red
CLR-3	Intumescent Firestop Collar — 3" (76.2 mm)	12 collars/case	Red
CLR-4	Intumescent Firestop Collar — 4" (101.6 mm)	12 collars/case	Red

Equivalent Products from Other Brands

Switching brands? This Everkem product is a functional equivalent to the competitor SKUs listed below per Everkem’s published Product Cross Reference. Formulations, cure times, and exact specs vary by manufacturer — confirm your project’s spec requirements before substituting.

Brand	Part Number	Product Name
Boss	81902, 81903, 81904	Boss 819 Firestop Pipe Collars
Hilti	283207	Hilti FS Collar CP 643N
Rectorseal	66350-66353	Metacaulk Intumescent Collars
STI	SSC150, LCC150	SpecSeal SSC and LCC Fire Stop Collars