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321 Buna-N O-Ring, 70A Durometer, Black, 1-316 ID, 1-916 OD, 316 Width Pack of 50
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321 Buna-N O-Ring, 70A Durometer, Black, 1-316 ID, 1-916 OD, 316 Width Pack of 50
Made of Buna-nitrile for use with a variety of fluids and hydrocarbons, this O-ring offers extreme resistance and versatility across a wide temperature range.
321 Buna-N O-Ring, 70A Durometer, Black, 1-316 ID, 1-916 OD, 316 Width Pack of 50
Item #: 175514375

321 Buna-N O-Ring, 70A Durometer, Black, 1-316 ID, 1-916 OD, 316 Width Pack of 50

Item #: 175514375

USD 24

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

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Order now and get it around Thursday, August 27
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Made of Buna-nitrile for use with a variety of fluids and hydrocarbons, this O-ring offers extreme resistance and versatility across a wide temperature range.
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What Stands Out

Durable Material
Constructed from high-quality Buna-N, these O-rings provide excellent resistance to oil and fuel, ensuring long-lasting performance in demanding environments.
Ideal Dimensions
With a 1-3/16" inner diameter and 1-9/16" outer diameter, these O-rings fit a wide range of applications, making them versatile for various projects and repairs.
Bulk Pack Savings
Packaged in a convenient set of 50, customers benefit from cost-effective purchasing, ensuring ample supply for multiple uses or repairs without frequent restocking.

Product Details

Shop 321 Buna-N O-Ring, 70A Durometer, Black, 1-316 ID, 1-916 OD, 316 Width Pack of 50 online at a best price in Turks and Caicos. B001385AUS
MaterialNitrile Rubber
Nominal Inside Diameter1.16 Inches (2.9 cm)
Item Diameter1.58 Inches (4 cm)
BrandMr O-Ring
ColorBlack

Who Should Buy?

Suitable For
  • Mechanical Engineers

    Ideal for engineers designing systems requiring durable seals to prevent leaks and maintain pressure, especially in machinery.

  • Plumbing Professionals

    Useful for plumbers needing reliable seals for pipelines and fixtures where water tightness is essential to prevent leakage.

  • DIY Enthusiasts

    Great for hobbyists tackling home repair projects that require various sealing solutions where high resilience and durability are needed.

Not Suitable For
  • High-Temperature Applications

    Not suitable for environments exceeding 250°F, as Buna-N rubber can degrade at higher temperatures, affecting performance.

Product Description

321 Buna-N O-Ring, 70A Durometer, Black, 1-316 ID, 1-916 OD, 316 Width Pack of 50

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is a Buna-N O-Ring, and what are its main characteristics?

    Answer: A Buna-N O-Ring is a circular sealing component made from nitrile rubber, known for its excellent resistance to oils and fuels. The 70A durometer rating indicates a medium-hardness material that maintains a good balance between flexibility and durability. With an internal diameter (ID) of 1-3/16" and an external diameter (OD) of 1-9/16", it effectively seals joints in various applications, ensuring leakage prevention and maintaining pressure.
  • Question: In which applications are 321 Buna-N O-Rings used?

    Answer: 321 Buna-N O-Rings are commonly used in the automotive, aerospace, and HVAC industries for sealing liquids or gases. They are ideal for applications requiring resistance to heat, oil, and chemical exposure, such as fuel systems in vehicles or hydraulic systems in machinery. The compatibility with hydraulic fluids and petroleum-based oils makes them a versatile choice for essential sealing functions.
  • Question: How do I properly install a Buna-N O-Ring?

    Answer: To install a Buna-N O-Ring correctly, ensure the groove dimensions match the O-Ring specifications for a snug fit. Clean the groove and the O-Ring to remove any contaminants that can compromise the seal. Gently stretch the O-Ring into place, avoiding sharp tools that may damage it. Once in position, ensure it's seated evenly around the groove to prevent leaks and ensure a reliable seal in the assembly.
  • Question: What is the temperature range for Buna-N O-Rings?

    Answer: Buna-N O-Rings can function effectively in temperatures ranging from -40°F to 250°F (-40°C to 121°C). This wide temperature range makes them suitable for diverse environments, including automotive engines and industrial machinery. However, exposure to extreme temperatures outside this range may lead to failure or reduced performance, making it crucial to check application specifications for optimal operation.
  • Question: What are the benefits of using a 70A durometer O-Ring?

    Answer: Using a 70A durometer O-Ring provides a balance of flexibility and compressive strength that ensures a reliable seal under various pressures. This hardness level makes it less likely to deform when compressed, allowing for long-lasting performance in dynamic applications. Additionally, the moderate hardness adapts well to slight groove variations, reducing the risk of leakage in critical installations.
  • Question: Can Buna-N O-Rings be reused?

    Answer: While Buna-N O-Rings can technically be reused under certain conditions, it is generally not recommended due to the wear and fatigue that can occur after a sealing cycle. If the O-Ring has any visible signs of damage, deformation, or hardening, replacing it is advisable. Reusing lasting O-Rings in less critical applications where a perfect seal isn't paramount could be considered, but always inspect thoroughly before reinstallation.
  • Question: What sizes are available for Buna-N O-Rings?

    Answer: Buna-N O-Rings are available in a wide range of sizes to accommodate various applications. From small and precise to larger diameters, O-Rings can be found in both standard and custom sizes. It's important to check compatibility with your specific application’s groove dimensions to ensure a proper fit and efficient sealing performance, ensuring your system operates smoothly without leakage.
  • Question: Are there specific chemicals that Buna-N O-Rings are not compatible with?

    Answer: Buna-N O-Rings are not suitable for exposure to strong oxidizing agents like concentrated acids, ozone, and amines. Using them in such environments can lead to rapid degradation and failure of the seal. For applications involving these chemicals, consider alternative materials such as fluorocarbon or ethylene-propylene rubber that offer improved resistance.
  • Question: What is the difference between Buna-N and other O-Ring materials?

    Answer: Buna-N O-Rings are known for their excellent oil and fuel resistance, making them a preferred choice in automotive and industrial applications. In comparison to silicone O-Rings, which excel in temperature extremes but lack oil resistance, or fluorocarbon O-Rings, which offer superior chemical resistance but at a higher cost, Buna-N provides a balanced option for most standard applications.
  • Question: Where can I buy 321 Buna-N O-Ring, 70A Durometer, Black, 1-3/16" ID, 1-9/16" OD, 3/16" Width (Pack of 50)?

    Answer: You can purchase the 321 Buna-N O-Ring, 70A Durometer, Black, 1-3/16" ID, 1-9/16" OD, 3/16" Width (Pack of 50) directly from Ubuy in Turks and Caicos. They provide a reliable platform with a variety of O-Ring products to meet your needs. Ensuring you're getting genuine parts, you can trust Ubuy for quality and convenience in sourcing your sealing solutions.

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Pros

  • High durability and strength
  • Excellent resistance to chemicals
  • Reliable sealing performance
  • Wide range of applications
  • Cost-effective pack of 50

Cons

  • May require proper installation techniques.

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  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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USD 24

Order now and get it around Thursday, August 27

QTY:

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  • dhl
Fastest cross-border delivery

Features & Benefits

  • Constructed from durable black Buna-nitrile material.
  • Effective sealing solution for diverse applications like engines and faucets.
  • Temperature tolerance range from -30°F to 250°F.
  • Durometer rating of 70A ensures high resistance to indentation.
  • Meets Aerospace Standard AS568A for reliable performance.
  • Ideal for use with petroleum, vegetable oil, alcohol, and various fluids.

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