3.5MM CS X 24.7MM ID BLACK BUNA 70D

Buna-N O-Ring, 3.5 x 24.7 mm, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Buna-N (Nitrile / NBR)
Durometer
70 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Unit of Measure
EA
SKU:
H3.5X24.7
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Product Specification

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H3.5X24.7 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 24.7 mm (0.972 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 31.7 mm (1.25 in). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Source specification: Metric O-RING, JIS P25.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and economical choice for high-volume maintenance programs. This material stands up to many alcohols, propane and butane, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

Maintenance and OEM teams specify it across automotive, agricultural equipment, and construction equipment.

Order part number H3.5X24.7, sold individually. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Item
H3.5X24.7
Description
3.5MM CS X 24.7MM ID BLACK BUNA 70D
Actual Outside Diameter
31.7 mm (1.25 inch)
Actual Cross Section
3.5 mm (0.138 inch)
Actual Inside Diameter
24.7 mm (0.972 inch)
FDA Compliant
No
Measurement System
Metric
Metal Detectable
No
NSF Certified
No
Product Code
6015
Product Category
O-Rings - Metric - Commodity