PARKER SEAL N0300 Parbak Up Ring Nbr Shore 8-329/NBR S1628-329

( Brand: Parker Seal ), ( Manufacturer Part Number: N0300 ), ( Part Type: Ring )

Review PARKER SEAL 8-329 Parbak Back up Ring 8-329/nbr Shore Cessna fits 1990

The Parker Seal N0300 8-329 ParBak Back-up Ring, also known as part number 8-329/NBR 90, is a critical component in various hydraulic systems, including those found in Cessna S1628-329 aircraft. This seal is specifically designed as a backup ring to provide an additional layer of protection against hydraulic leaks and pressure loss.

This ParBak Back-up Ring is manufactured using advanced elastomer materials, which deliver superior sealing performance in high-pressure hydraulic applications. The specific material used for this Parker seal is a Shore A hardness of 90, ensuring a firm yet flexible seal that can effectively withstand the rigors of aviation hydraulic systems.

Measuring 8 inches in outside diameter and 0.329 inches in inside diameter, this backup ring is precisely engineered to fit into specific hydraulic components. Its cross-sectional design includes an outer diameter of 8.441 inches and an inner diameter of 7.882 inches, allowing it to create a tight, leak-free seal.

The Parker Seal N0300 8-329 ParBak Back-up Ring is also distinguished by its ParBak design, which facilitates easy installation and removal. This design feature enables maintenance personnel to quickly replace the seal without disrupting the entire hydraulic system, minimizing downtime and reducing overall maintenance costs.

In summary, the Parker Seal N0300 8-329 ParBak Back-up Ring is an essential hydraulic component that delivers reliable sealing performance in high-pressure applications. Its Shore A 90 material, precise dimensions, and ParBak design make it an ideal choice for aviation hydraulic systems, ensuring optimal system efficiency, extended component life, and reduced maintenance requirements.

Parker Seal N0300 8-329 Par Bak Back-up Ring: A Comprehensive Analysis

The Parker Seal N0300 8-329 Par Bak Back-up Ring, also known as 8-329/NBR 90 Shore Cessna S1628-329, is a crucial component used in various hydraulic systems. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this part.

1. Superior Sealing: The Parker Seal N0300 8-329 Par Bak Back-up Ring is designed using NBR 90 Shore rubber, which offers excellent sealing properties, even under high pressure and temperature conditions.

2. Enhanced Durability: This backup ring is engineered to provide superior resistance to wear and tear, ensuring a long service life.

3. Precision Manufacturing: Parker's rigorous manufacturing processes guarantee that the backup ring meets the highest levels of quality and accuracy, ensuring a proper fit and optimal performance.

1. Cost: The Parker Seal N0300 8-329 Par Bak Back-up Ring may be more expensive compared to other aftermarket alternatives.

2. Availability: Due to its high demand and specific application, this backup ring may not be readily available in all local stores or distributors, requiring additional time and effort to source.

The Parker Seal N0300 8-329 Par Bak Back-up Ring offers exceptional sealing performance, durability, and precision manufacturing that can be crucial in maintaining optimal hydraulic system functionality. However, its relatively higher cost and limited availability may deter some buyers.

If you prioritize superior sealing performance, durability, and precision manufacturing in your hydraulic components, the Parker Seal N0300 8-329 Par Bak Back-up Ring is an excellent investment despite its higher cost and limited availability. If your budget is more limited, consider exploring alternative aftermarket options, but keep in mind that their performance may not match the Parker Seal's exceptional qualities.

Details:

Brand: Parker Seal Co. MPN: N0300 8-329 / S1628-329. Material NBR: Excellent resistance to petroleum-based hydraulic fluids. Packing / Back-up Rings.

Cross Section W: 0.183 inches 4.65mm. These are high-quality Parbak contoured rings designed to prevent extrusion in high-pressure hydraulic applications and extend the life of your O-rings. Hardness: 90 Shore A Barometer. Country/Region of Manufacture: USA.

Inside Diameter ID: 2.013 inches 51.13mm. New Old Stock. Material: Nitrite Butane Rubber NBR.

part #: n0300 prices

• $59.99-$120.99

specifications aviationpar:

• for makes: Cessna
• for years: 1990
• brand: Parker Seal
• mpn: N0300
• part type: Ring

returns aviationpar:

• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer

offer aviationpar:

• best offers: True
• availability: In Stock
• options: Ship-to-home
• started: April 22, 2026
• quantity: 2
• sold: 0

general aviationpar:

• Parts Accessories > Aviation Parts Accessories > Parts
• condition: New

shipping aviationpar:

• cost: $0.00
• carrier: USPS
• transit: 5-10 Days
• class: Standard
• service: USPS Ground Advantage
• type: Fixed

payments aviationpar:

• credit card: Discover
• wallet: Google-pay
• other

seller aviationpar:

• # reviews: 6
• city: Peoria, Arizona
• rating: 100.0%

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