Circular Tank Manway EPDM Seal Gasket
A continuous circular EPDM elastomer replacement gasket designed to seat around the cover rim of a round stainless steel tank manway. The primary source specifies white EPDM, while reference records list 20" (500 mm) in EPDM and an 8" to 30" (200–750 mm) circular manway size chart.
Application Interface | Circular tank manway / manhole cover perimeter channel |
|---|---|
Gasket Form | Continuous circular profiled manway perimeter seal ring |
Gasket Material | EPDM elastomer (Silicone and Viton options available) |
Reference Size Scope | 8"–30" (200–750 mm) |
Ring geometry | Continuous circular manway perimeter seal ring |
Size
Product overview
Circular Manway Cover Perimeter Seal
This endless circular elastomer gasket fits into the peripheral retaining channel of a round tank manway cover or neck ring. When the manway cover is closed and secured, the profiled ring compresses between the cover lip and neck flange to seal the vessel access opening.
EPDM Material and Color Observations
The primary catalog page is titled Manhole White EPDM Gasket and lists EPDM in its parameter header, noting that EPDM provides higher resistance to acidic media compared with silicone. While companion reference pages in the archive also cover Silicone and Viton circular manway gaskets, this item is scoped to the EPDM version.
Nominal Manway Size References
The primary specification states that manway gaskets are available across tank manway sizes without printing a dimension table. In the paired reference files, the EPDM datasheet specifies a 20" (500 mm) circular manway size, and the companion circular manway chart (titled for the silicone sibling) lists 8" (200 mm), 12" (300 mm), 16" (400 mm), 18" (450 mm), 20" (500 mm), 24" (600 mm), and 30" (750 mm).
Channel Profile and Selection Checks
Because tank manway series use different groove geometries (such as U-channel, dovetail, or lip-retention profiles) and neither source provides a cross-sectional dimension drawing, buyers must match the gasket cross-section, inner/outer ring diameter, and elastomer color to the exact manway cover model.
Technical specifications
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