Yes, our 70A hardness Nitrile Rubber O-Rings with 6mm cross-section are suitable for medium-pressure applications. The 6mm cross-section provides good sealing performance and mechanical strength, capable of withstanding working pressures in most industrial equipment, hydraulic systems, and automotive applications. For specific pressure ratings, consult our technical guidelines based on your gland design and application requirements.

All our NBR O-Ring Seals are carefully packaged according to specifications to ensure they are not damaged during transportation. We use reinforced packaging materials, including individual bags for each size, protective padding, and sturdy boxes, to ensure products arrive in perfect condition. Standard shipping includes protective measures to prevent crushing, twisting, or other damage during transit.

Nitrile (NBR) O-Rings offer superior resistance to oils, fuels, and petroleum-based fluids compared to many other elastomers. Unlike EPDM (which excels in weather resistance but is poor with oils) or Silicone (excellent temperature range but lower strength), NBR provides the best balance for automotive and industrial applications involving petroleum products. The 70A hardness offers good mechanical properties for most sealing applications.

Standard NBR O-Ring Seals are not typically certified for potable water applications. While they resist water well, for drinking water systems, we recommend using FDA-approved materials like EPDM or specifically formulated Nitrile compounds. Contact us for food-grade or potable water certified O-ring options if needed for your application.

Properly stored NBR O-Ring Seals have a shelf life of 8-10 years. Store in a cool, dry place away from direct sunlight, ozone sources (like electric motors), and extreme temperatures. Keep in original packaging until ready for use. Avoid storing near heat sources or chemicals that might degrade the rubber.