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)
• Forms available: Seal-Chief-SS 7/8 Stick (24 each, 7/8″ x 6″).

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].

How do I confirm this grade fits my service?

If your service condition sits near the rated temperature limit, send us the temperature and the medium with your enquiry and we will confirm the grade against the manufacturer’s data 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.