Dome Hole Plug Pentair Structural Tanks Only - ST21774

Your Price: $19.95

Pentair S21774, Dome Hole Plug,
Is not a direct replacement for older tanks or other "Brands" of Dome Hole tanks.
Only order if you are sure this is the one you need.

Part Number: ST21774

Availability: IN STOCK ( Limited Quantities )

Quantity

Description

Newer ( since 2021 ? ) Pentair Structural dome hole tank version only

( can not be used on older structural or other brands of tanks ).
Includes o-ring.

Is not a direct replacement for older tanks or other "Brands" of Dome Hole tanks.
This plug has slightly smaller diameter and finer threads that older version.

Only order if you are sure this is the one you need.

O-ring is PN ST21774-323

and

standard size O-ring : AS568-323

CS nominal : 3/16

ID Nominal : 1 5/16

OD Nominal : 1 11/16

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Dome Hole Plug Pentair Structural Tanks Only - ST21774

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