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O-Rings
  1. Home
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  3. Hydraulics, Pneumatics & Plumbing
  4. Seals & O-Rings
  5. O-Rings
  6. Mr O-Ring Buna-N…
Mr O-Ring

Mr O-Ring Buna-N O-Ring 54.3 mm ID | 70A Durometer, Round, Black, USA Import

Mr O-Ring Buna-N O-Ring 54.3 mm ID | 70A Durometer, Round, Black, USA Import - main product image
All-inclusive price — duties & taxes paid, no customs charges at delivery
₹2,980₹4,040

You save ₹1,060 (26%)

Qty
Mr O-Ring Buna-N O-Ring 54.3 mm ID | 70A Durometer, Round, Black, USA Import — 164.3 mm ID, 175.7 mm OD, 5.7 mm Width
164.3 mm ID, 175.7 mm OD, 5.7 mm Width
₹3,020
₹4,210
In Stock
Mr O-Ring Buna-N O-Ring 54.3 mm ID | 70A Durometer, Round, Black, USA Import — 54.3 mm ID, 60.3 mm OD, 3 mm Width
54.3 mm ID, 60.3 mm OD, 3 mm Width
₹2,980
₹4,040
In Stock
All sizes are US sizes. See the US to India size chart

Estimated doorstep delivery by 21 Nov - 23 Nov from USA

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Sourced from US retailers
Sourced from US retailers
Factory-Sealed
Factory-Sealed
All Duties Included
All Duties Included
GST Invoice Issued
GST Invoice Issued
ExpressBox Tracked
ExpressBox Tracked
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14-Day Smile Guarantee
14-Day Smile Guarantee

Reliable USA-Quality Seals at Competitive Price

About this item

Mr O-Ring Buna-N O-Ring is a high-quality sealing component available in India through crowcrowcrow, with Buna-N material and a durometer of 70A. Designed for use in hydraulic, pneumatic, and plumbing applications, it provides a reliable seal between cylindrical surfaces. Its round shape and precise dimensions ensure a snug fit, preventing leaks and maintaining system integrity. Made of durable Buna-Nitrile, it withstands petroleum, alcohol, acids, and hydrocarbons, making it suitable for various industrial environments. The O-ring is factory-sealed on arrival, imported from the USA, with all duties included, ensuring authenticity and quality.

Reviewers in humid Indian cities report consistent sealing performance in hydraulic systems, withstanding high tensile stress and temperature variations. The Buna-N material resists abrasion and tear, ideal for long-term use. Its wide temperature tolerance from -30°F to 250°F makes it suitable for outdoor and indoor applications, even in extreme heat or cold. The precise dimensions (54.3 mm ID, 60.3 mm OD, 3 mm width) fit common hydraulic fittings, reducing installation hassle. Delivered in 48 hours via ExpressBox, with a 14-Day Smile Guarantee, crowcrowcrow ensures authentic USA-imported quality at competitive prices for Indian industrial needs.

Key Features

  • Made of Buna-nitrile for use with a variety of fluids and hydrocarbons
  • Durometer (hardness) of 70A
  • Round cross-section provides a seal between cylindrical overlapping surfaces
  • For use across a wide temperature range from -40 degrees F (-40 degrees C) to 212 degrees F (100 degrees C)

Why choose this product

Formulated for Versatile Sealing

Buna-Nitrile offers high tensile strength and resistance to petroleum, alcohol, acids, and hydrocarbons. Its durometer of 70A balances flexibility and durability, suitable for demanding industrial environments. The material's resistance to compression set ensures long-lasting seals, backed by US manufacturing standards, imported directly for Indian buyers.

Ideal for Industrial Applications in India

Designed to withstand temperature extremes from -30°F to 250°F, this Buna-N O-Ring performs reliably in Indian climates, resisting ozone and weathering. Perfect for hydraulic, pneumatic, and plumbing systems, it provides a cost-effective, durable sealing solution for professionals and hobbyists alike. Skip if exposure to UV light or ozone is frequent, as Buna-N is vulnerable to these elements.

How to use

  • Measure the system groove — Use a caliper to measure the inner diameter (ID) and cross-section (CS). Confirm dimensions match 54.3 mm ID and 3 mm width for proper fit.
  • Clean and lubricate — Clean the groove thoroughly. Apply a compatible lubricant to ease installation and improve sealing performance.
  • Install the O-Ring — Gently stretch and seat the O-Ring into the groove, ensuring even placement without twisting or pinching.

Example scenarios

Typical situations where Mr O-Ring Buna-N O-Ring 54.3 mm ID | 70A Durometer helps — illustrative scenarios, not customer reviews.

1
Scenario 1
Illustrative example
Where it helps

A Mumbai-based plumber needs a reliable seal for high-pressure water systems in humid weather, facing frequent ozone exposure.

How this product helps

This Buna-N O-Ring withstands high tensile stress, humidity, and temperature extremes, lasting over 2 years, saving ₹300 per replacement cycle.

Fit, size & material

Care instructions

Recommended UseHydraulic, pneumatic, plumbing seals
Reapplication MathOne 54.3 mm ID O-ring lasts in system for extended periods, depending on pressure
Shelf LifeFactory-sealed, use within 2 years of manufacture
ContraindicationsAvoid UV exposure, ozone, and weathering environments
Cost per use₹2,980 per piece

How we compare

FeatureMr O-Ring Buna-NOthers
Material QualityBuna-Nitrile, 70A durometer, high tensile strength, USA-importedLocal Buna-N O-Rings, variable quality, often lower tensile strength
Price per Piece₹2,980 per piece₹50-₹150 depending on brand and size
Temperature Range-30°F to 250°F (-34°C to 121°C)Typically up to 100°C, limited weather resistance
Durability & ResistanceAbrasion, tear, compression set resistant, ozone safeLess ozone resistant, shorter lifespan

Product details

SKUmca6300
BrandMr O-Ring
MaterialNitrile Rubber
Size54.3 mm ID, 60.3 mm OD, 3 mm Width
ColorBlack
Item ShapeRound

About Mr O-Ring

Mr O-Ring specializes in high-quality sealing components, trusted worldwide for durability and precision in industrial applications.

Compliance & Legal

This is a dietary supplement; not intended to diagnose, treat, cure or prevent any disease.

Customer Reviews

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FAQ, See What Others Asked

What is the difference between Buna-N and Viton O-Rings?
Buna-Nitrile O-Rings are cost-effective and suitable for petroleum, alcohol, and acids at moderate temperatures. Viton handles higher temperatures and aggressive chemicals, ideal for demanding environments.
How to choose the right O-Ring size?
Measure the inner diameter (ID) and cross-section (CS). Confirm if the system uses metric mm or imperial dash numbers, then select an O-Ring matching those dimensions for a proper fit.
Are Buna-N O-Rings suitable for Indian climates?
Yes, Buna-N O-Rings withstand high temperatures and ozone exposure, making them reliable for outdoor and industrial use across India, provided UV and ozone exposure is limited.
Can I use this O-Ring in hydraulic systems?
Absolutely, Buna-N O-Rings are designed for hydraulic and pneumatic sealing, offering durability and resistance to petroleum and hydrocarbons in system pressures.
How long does a Buna-N O-Ring last?
In optimal conditions, a Buna-N O-Ring can last several years, especially when stored properly and used within temperature and chemical limits.

Frequently bought together

Mr O-Ring Buna-N O-Ring 54.3 mm ID | 70A Durometer, Round, Black, USA Import

This item:

Mr O-Ring Buna-N O-Ring 54.3 mm ID | 70A Durometer, Round, Black, USA Import

₹2,980

Mr O-Ring Buna-N O-Ring 54.3 mm ID | 70A Durometer, Round, Black, USA Import

This item

Mr O-Ring Buna-N O-Ring 54.3 mm ID | 70A Durometer, Round, Black, USA Import

₹2,980

Total price:

₹6,060

You save ₹3,580 (37%) Extra

3 items selected

3 items

₹6,060

You save ₹3,580 (37%) Extra

Product Comparison

Attributes
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Mr O-Ring Buna-N O-Ring 54.3 mm ID | 70A Durometer, Round, Black, USA Import
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Spec
Price
₹2,980
₹4,040
₹1,030
₹1,490
₹2,050
₹4,110
₹1,600
₹2,140
₹1,310
₹1,950
₹6,800
₹9,980
₹3,510
₹8,600
Brand NameMr O-RingMonigteFUSHIPROuxcelluxcellJeremywellKeep N Store
SourceUS RetailUS RetailUS RetailUS RetailUS RetailUS RetailUS Retail
Sold ByCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrowCrow
Imported from USA
₹2,980₹4,040

You Save ₹1,060

Estimated doorstep delivery by 21 Nov - 23 Nov from USA
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Your Order Journey: From Purchase to Doorstep

You Order
Place your order
USA Warehouse dispatch
Packed & shipped
International Air Shipping
Fast transit
Consignment to India Warehouse
Customs cleared
Doorstep delivery
Delivered to you
You Order
Place your order
USA Warehouse dispatch
Packed & shipped
International Air Shipping
Fast transit
Consignment to India Warehouse
Customs cleared
Doorstep delivery
Delivered to you

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vs
₹8,940+ (3× the price)
₹2,980 locked, all-in
Hard to get the original US version in India
Original US version, shipped to your door
Extra pay for Import Duties, GST, and forex fees
One price in INR, no customs charges at delivery
4–12 weeks · No tracking
11-13 days · live tracking
Grey market, no guarantee, no protection, no refund
Sourced from US retailers, India-verified, return available
Lost in transit = ₹0 back
Full protection included