Value Collection ZMSCS70109 Silicone O-ring Dash 109 100 Pack

Product Description

The VALUE COLLECTION ZMSCS70109 is a Dash 109 silicone O-ring designed for sealing applications that demand a wide operating temperature range and reliable performance under dry heat conditions. The ring measures 0.313 inches inside diameter, 0.500 inches outside diameter, and 0.094 inches thick, with a round cross section and a Shore A hardness of 70. Sold in a package quantity of 100, this O-ring is suited for plumbing, HVAC, and light industrial maintenance applications where ozone, weather, and moderate chemical exposure are factors. Each unit weighs approximately 0.02 pounds.

This O-ring is used in applications requiring a broad service temperature range, from -80 degrees F to 450 degrees F. It performs well in environments with exposure to oils, certain chemicals, and solvents, though oil resistance is limited and should be evaluated against the specific service conditions. It is a common choice for residential and light commercial plumbing, HVAC equipment sealing, and general mechanical assemblies where silicone elastomer is specified. Note that this part is not FDA approved and should not be selected for food or pharmaceutical contact applications.

Key Features

• Dash 109 size with 0.313 inch ID and 0.500 inch OD for standard fitment
• Silicone elastomer construction rated for -80 degrees F to 450 degrees F service range
• Shore A hardness of 70 for a firm, reliable seal under compression
• Round cross section for consistent contact and seating in standard O-ring grooves
• Compatible with oils, chemicals, and solvents in moderate exposure environments
• Packaged in a quantity of 100 units per order

Compatibility

Designed as a standard Dash 109 replacement O-ring for any application specifying a silicone O-ring with 0.313 inch ID, 0.500 inch OD, and 0.094 inch cross section thickness.

Installation Notes

O-ring installation should be performed by a licensed plumber, HVAC technician, or qualified mechanical technician depending on the application. Always depressurize and de-energize the system before replacing any sealing component. Inspect the O-ring groove for damage, debris, or corrosion before installation, and apply a compatible lubricant to aid seating without compromising the elastomer. Do not stretch or twist the O-ring during installation, as this can cause premature seal failure.