Deacon Seal-Chief-SS Nuclear Grade Sealants, Pack of 24

What is the Deacon Seal-Chief-SS Nuclear Grade Sealants?

DEACON Seal-Chief-SS is a black, dense paste, fast curing and hard-setting injectable sealant with outstanding bridging and plugging capabilities. Its ideal use is for clamps, enclosures, perimeter seals, wire wraps, and flanges, designed specifically for bridging large gaps or voids and for killing or plugging valves or lines no longer in use. Because of its accelerated curing time it will not wash out like conventional sealants. Note: Not for use as a valve packing.

What are the benefits of the Seal-Chief-SS Nuclear Grade Sealants?

• Batch Analysis Reports available
• Won't wash out like conventional sealants
• Broad chemical compatibility

What are the specifications of the Seal-Chief-SS Nuclear Grade Sealants?

• Base Materials Black, dense paste
• Service Rating 200ºF (93ºC) to 1600ºF (871ºC)
• 7/8” x 6” Sticks – 24 sticks per pail

What are the characteristics of the Seal-Chief-SS Nuclear Grade Sealants?

• Fast curing and hard-setting
• Dense paste
• Outstanding bridging and plugging capabilities
• Accelerated curing time

What is the part number for the Seal-Chief-SS Nuclear Grade Sealants?

Deacon part number 111-SEAL-CHIEF-SS 7/8 X 6, Seal-Chief-SS 7/8 Stick [24 each – 7/8 x 6].

The 2026 manufacturer price list prices this item by the pack, so what you order is the pack: Pack of 24. The price shown is the price of that pack.

How does this grade compare with the rest of the Deacon range?

Across the 55 Deacon injectable sealants and compounds PE Energy stocks, this one is rated 200°F (93°C) to 1600°F (871°C). That places it above 47 of the other 54 on upper service temperature: Dry-Pak 6 High Temp Powder / Light Fiber Mixture stops at 1500°F, and 189 Graphite continues to 1800°F.

Deacon publishes these ratings one product page at a time, so the comparison above is the part that is hard to assemble before you order. If your service condition sits near a boundary, send us the temperature and the medium with your enquiry and we will confirm the grade against the 2026 manufacturer catalogue before quoting.

How do I order or get a quote?

PE Energy supplies the Deacon Seal-Chief-SS Nuclear Grade Sealants from the 2026 manufacturer catalogue. Order the part number for the option you need, or send us the part number with your application details and we return pricing and lead time.