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> Size 257 o-rings, 5-7/8" id x 6-1/8" od buna oring
Size 257 o-rings, 5-7/8" id x 6-1/8" od buna oring
This sale is for 1 piece of o-ring part# 257 BN70. They are made of 70 durometer Buna-N (nitrile) rubber. These are your standard black o-rings that you see everywhere.
Standard Nitrile is also known as Buna-N. Excellent resistance to petroleum-based oils and fuels, water and alcohols. Nitrile also has good resistance to acids and bases, except those with a strong oxidizing effect.
Temperature Range: –55° to 120°C (–65° to 248°F)
Please note that the photo is for reference only and not a photo of the actual parts you will receive. It seemed silly to take photos of each individual part as there are hundreds of different size variations and it would have taken days to photograph them individually.
Actual ID in inches = 5.859" (+/-.035")
Actual Cross Section in inches = .139" (+/-.004")
Actual ID in millimeters = 148.82 mm (+/-.89)
Actual Cross Section in millimeters = 3.53 (+/-0.10)
SUCSP207-20 stainless bearings
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