327 Quad Ring (X-Ring) 1-3/4ID x 2-1/8OD 70 Duro Round Black
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Global O-Ring & Seal Llc 327 Quad Ring (X-Ring) 1-3/4ID x 2-1/8OD 70 D...
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Product Details
| Brand | Global O-Ring & Seal Llc |
| Mfr. Model # | QN70327 |
| Global Industrial Part # | B1371972 |
| Color | Black |
| Weight | 0.01 lb |
| Length | 4 in |
| Width | 4 in |
| Height | 4 in |
| Unit of Measure | EA |
| Minimum Order Quantity | 19 |
| Ships Via | Parcel |
| Freight Class | 400 |
| Lead Time | 1 business day |
| Returnable | No |
| UNSPSC | 31401503 |
Description
Nitrile rubber also known as NBR or buna n is one of the most commonly used sealing elastomers due to its resistance to petroleum-based fuels and lubricants and its relatively low price. Nitrile elastomers are copolymers of acrylonitrile and butadiene. There are a number of common variations of nitrile compounds.
Acrylonitrile content the acrylonitrile (acn) content of the polymer chains can be varied from 18 to 50. Lower acn content gives better low-temperature properties but poorer fuels and polar lubricants. Higher acn content gives poorer low-temperature properties but improved fuels and polar lubricants resistance. Standard nbrs typically have 34 acn content.
Cure system sulfur-cured
Standard nitriles are usually sulfur-cured. Sulfur-cured compounds offer better low-temperature properties but are more prone to hardening with high temperatures.
Peroxide-cured nitriles have better heat resistance and lower compression sets but are more expensive and more difficult to process.
Temperature rangeul
Standard low temp -40°c (-40°f)
Standard high temp 100°c (212°f)