How does shipping work for orders on MRO Exchange?

Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

What payment methods does MRO Exchange accept?

MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

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Timken 416888 National Radial Shaft Oil Seal 4.500 in ID x 5.500 in OD x 0.500 in Width Open Box - Unused

$24.99 USD

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✓ 30-day returns on every item — return policy

ConditionOpen Box - Unused MPN416888 Stock #0226-00216

30-day returns on every item. Photos reflect the actual item’s current condition — see our return policy and condition guide.

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⚡ Same-day shipping available — order by 11 am CT ($100 add-on at checkout)

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The Timken National 416888 is a solid nitrile oil seal designed for general purpose rotary shaft sealing applications. This seal features a 4.500 in. shaft diameter, 5.506 in. outside diameter, and 0.500 in. overall width, conforming to a 41 design type with dual lip construction and a loaded garter spring. The casing incorporates an inner metal case for structural support, while the multi lip nitrile rubber (NBR) element provides primary sealing against lubricants and contaminants. Operating parameters include a maximum shaft surface speed of 3,000 fpm and a continuous temperature range of minus 40 to 225 degrees Fahrenheit. Misalignment tolerance is rated at 0.015 in. at 800 rpm and 0.010 in. at 4,200 rpm. The 410000 series Timken National 416888 is commonly applied in industrial gearboxes, pumps, mixers, conveyors, and heavy equipment where lubricant retention and exclusion of dirt, moisture, and abrasive contaminants are required. The handwritten markings on the packaging reference a Bullard application (M 457 6 01), indicating prior cross reference use for vertical turret lathe service. Nitrile lip durometer falls within the 60 to 80 range. The part number is 416888 with manufacturer UPC 053893484433. The unit ships in its original Timken National Seal branded box with internal packaging intact. Cross references include National 416888 and SK 34171502J. Typical applications include automotive wheel sealing, industrial bearing protection, and machine tool spindle sealing assemblies operating within the published speed and temperature limits.

Stock # 0226-216

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.