Deacon 990 Injectable Sealant

Price range: $130.61 through $1,308.99

Deacon 990 Injectable Sealant. Heat curing, thick fibrous injectable compound. Good travel. Below 550ºF (288ºC), speed up the cure by adding 103-P Accelerator (always use accelerator when sealing boiler feed water). Service rating 250°F to 950°F (121°C to 510°C). Forms available: J-Stick; Gallon; Plug (100 each, 5/8″ x 3″).

Package

Clear

SKU: DCN-990-INJECTABLE-SEALANT

Manufacturer:

Deacon

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What is the Deacon 990 Injectable Sealant?

Heat curing, thick fibrous injectable compound. Good travel. Below 550ºF (288ºC), speed up the cure by adding 103-P Accelerator (always use accelerator when sealing boiler feed water). Shelf life is 6 months in closed container. Refrigerated storage recommended.

What are the specifications of the 990 Injectable Sealant?

Service Rating 250ºF to 950ºF (121ºC to 510ºC)
Forms available: J-Stick; Gallon; Plug (100 each, 5/8″ x 3″).

What are the characteristics of the 990 Injectable Sealant?

Excellent bridging, cures with heat to a semi-flexible material that will still expand and contract with the joint

Where is the 990 Injectable Sealant used?

Flanges, enclosures. For use on boiler feed water, condensate, high pressure steam, killing or plugging lines and valves (not for use as a valve packing)

Which Deacon 990 Injectable Sealant do I order?

J-Stick: part number 111-990 J-STICK
Gallon: part number 111-990 GALLON
Plug (Pack of 100): part number 111-990 PLUG

Pack sizes: J-Stick = 1 each; Gallon = 1 each; Plug = 100 each (5/8″ x 3″).

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 990 Injectable Sealant 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.