High-Density Sealants
HDSE™ is a high-density silicone elastomer developed and manufactured exclusively by PCI Promatec. Primarily developed as a fire sealant capable of providing a high degree of gamma radiation shielding, HDSE™ is also an excellent flood seal material (up to 30 psi pressure). Further, relative to other sealants, this material acts as a heat sink, thereby reducing the concern for cable derating. Installed as a liquid, this ensures a complete fill in and around penetrating elements. Cured, it exhibits a durable, damage-resistant exterior surface that is easy to decontaminate.
45B: Medium-Density Silicone Elastomer
45B is an elastomer-based product developed and marketed by PCI Promatec. 45B is typically supplied as a two-part set of A and B liquid components. The A liquid is black and the B liquid is buff for easy identification and inspection of complete mixing. Installed by hand or machine, thorough mixing of the components in a 1:1 ratio yields a high dielectric liquid that cures into a firm elastomer at room temperature with no off-gassing or other by-products. Since it is installed as a liquid, a complete fill in and around penetrating elements is ensured. Cured, it exhibits a durable, damage-resistant exterior surface that is easy to decontaminate.

Radiation Resistance
45B has undergone substantial radiation exposure levels (1.25 x 108 Rads Gamma) with no significant changes reported to the material’s physical properties, (fracturing or spalling). Base material has undergone exposures as high as 7.13 x 108.
Fire Qualification
Numerous successful full-scale fire tests have been performed at nationally recognized laboratories for various seal configurations including electrical and mechanical elements in large, complex block out openings. Seal designs have been qualified for a three-hour fire resistance at a 6” depth, without permanent damming.
Repairability
45B can be selectively removed with relative ease using blunt non-conductive tools and devices. New 45B material can then be applied to become integral with the existing 45B.
Pressure Testing
Configurations have been qualified for up to 20-psi pressure resistance with zero leakage at a six-inch depth.
Packaging
45B is supplied in 100 lb. sets consisting of two five-gallon containers, yielding approximately 1.1 cubic foot of cured material.
Cure Time
The cure time for the 45B can be as little as 10 minutes, or as long as 8 hours. Custom cure times can be requested.
SF-60: Medium-Density Silicone Elastomer
SF-60 is an elastomer-based product marketed by PCI Promatec. SF-60 is typically supplied as a two-part set of A and B liquid components. The A liquid is black and the B liquid is buff for easy identification and inspection of complete mixing. Installed by hand or machine, thorough mixing of the components in a 1:1 ratio yields a high dielectric liquid, that cures into a firm elastomer at room temperature, low in halogens, with no off-gassing or other by-products. Since it is installed as a liquid, a complete fill in and around penetrating elements is ensured. Cured, it exhibits a low ampacity derating and a durable, damage-resistant exterior surface that is rated excellent for decontaminability.

Radiation Resistance
SF-60 has undergone substantial radiation exposure levels (1 x 108 Rads Gamma) with no significant changes reported to the material’s physical properties. Base material has undergone exposures as high as 7.13 x 108.
Fire Qualification
Numerous successful full-scale fire tests have been performed at nationally recognized laboratories for various seal configurations including electrical and mechanical items in large, complex openings. Designs have been qualified for a three-hour fire resistance at a 6” depth, without permanent damming.
Repairability
SF-60 can be selectively removed with relative ease using blunt non-conductive tools and devices. With minor preparation, newly installed SF-60 material becomes integral with existing SF-60.
Pressure Testing
Configurations have been qualified for up to 20-psi pressure resistance with zero leakage at a six-inch depth.
Packaging
SF-60 is supplied in 100 lb. sets consisting of two five-gallon containers, yielding approximately 1.2 cubic foot of cured material.
Cure Time
The cure time for the SF-60 can be as little as 10 minutes, or as long as 8 hours. Custom cure times can be requested.
LDSE: Medium-Density Silicone Elastomer
LDSE is an elastomer-based product developed and marketed by PCI Promatec. LDSE is typically supplied as a two-part set of A and B liquid components. The A and B liquids are black and off-white, respectively, for easy identification and inspection of complete mixing. Installed by hand or machine, thorough mixing of the components in a 1:1 ratio yields a high dielectric liquid, that cures into a light weight, firm elastomer at room temperature, low in halogens, with no off-gassing or other by-products. Since it is installed as a liquid, a complete fill in and around penetrating elements is ensured. Cured, it exhibits a durable, damage-resistant exterior surface that is easy to decontaminate.

Radiation Resistance
LDSE has undergone substantial radiation exposure levels (5 x 107 Rads Gamma) with no significant changes reported to the material’s physical properties. Base material has undergone exposures as high as 7.13 x 108.
Fire Qualification
Numerous successful full-scale fire tests have been performed at nationally recognized laboratories for various seal configurations including electrical and mechanical items in large, complex openings. Designs have been qualified for a three-hour fire resistance at a 6” depth without, and lesser depths with, permanent damming.
Repairability
LDSE can be selectively removed with relative ease using blunt non-conductive tools and devices. With minor preparation, newly installed LDSE material becomes integral with existing LDSE.
Pressure Testing
Configurations have been qualified for up to 20-psi pressure resistance with zero leakage at a four-inch depth.
Packaging
LDSE is supplied in 60 lb. sets consisting of two five-gallon containers, yielding approximately 1. cubic foot of cured material.
Cure Time
The cure time for the LDSE can be as little as 10 minutes, or as long as 8 hours. Custom cure times can be requested.
Medium Density Sealants
This class of sealants possesses the structural integrity allowing them to act as pressure seals as well as offering fire endurance. As with all two-part silicones we offer, they are introduced into the opening as a high dielectric strength liquid that cures in place. In general, these sealants all have a very low impact on cable ampacity, are naturally low in halogen content, and can tolerate axial movement with bond breakers.
SF-20: Low-Density Silicone Elastomer
SF-20™ Silicone Foam is a low-density resilient fire sealant material developed and manufactured exclusively by PCI Promatec. Installed as a liquid, this ensures a complete fill in and around penetrating elements. This seal type is suitable for fire and air concerns. SF-20™ is typically supplied as a two-part set comprised of A and B liquid components. The A liquid is black and the B liquid is buff for easy identification and inspection of complete mixing. Through mixing of the components in a 1:1 ratio yields a liquid encapsulator that cures into a foamed elastomer at room temperature. A mild exotherm (36° F) is exhibited during the curing reaction.

Radiation Resistance
SF-20 has undergone substantial radiation exposure levels (1 x 108 Rads Gamma) with no significant changes reported to the material’s physical properties.
Fire Qualification
Numerous successful full-scale fire tests have been performed at nationally recognized laboratories for various seal configurations including electrical and mechanical items in large, complex openings. Designs have been qualified for a three-hour fire resistance at a depth as little as 6″ with permanent damming. Other designs utilize 9″ and 10″ with damming and 12″ without.
Repairability
SF-20 can be selectively removed with relative ease using blunt non-conductive tools and devices. With minor preparation, newly installed SF-20 material becomes integral with existing SF-20.
Pressure Testing
Certain configurations have been qualified for up to 3-psi pressure resistance with minimal to zero leakage. Other configurations may vary regarding pressure resistance.
Packaging
SF-20 is supplied in 100 lb., 80 lb. and 17 lb. sets consisting of two 6, 5 or 1-gallon containers, respectively.
Cure Time
The cure time for the SF-20 is 1 to 3 minutes, but varies with temperature.
SE-FOAM: Light-Density Silicone Foam
SE-Foam™ is a low to medium density resilient fire sealant material manufactured exclusively by PCI Promatec. It has improved fire resistance compared with SF-20™ silicone foam and can be installed in lesser depths for the same fire rating. Installed as a liquid, similar to SF-20™, this ensures a complete fill in and around penetrating elements. This seal type is suitable for fire and air concerns. SE-Foam™ is typically supplied as a two-part set comprised of A and B liquid components. The A liquid is black and the B liquid is buff for easy identification and inspection of complete mixing. Through mixing of the components in a 1:1 ratio yields a liquid encapsulator that cures into a foamed elastomer at room temperature. A mild exotherm (36° F) is exhibited during the curing reaction.