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Armstrong Pump Model 4280 Seal Kit 4280M-11-1/2JP

(image for) Armstrong Pump Model 4280 Seal Kit 4280M-11-1/2JP

Armstrong pump model 4280 repair kit P/N 4280M-11-1/2JP

Includes casing gasket, shaft sleeve, mechanical seal

Kit used with medium size new style 4280 pump models

This kit works only with motors with JP in motor frame number. Motors with JM in motor frame number will require a different sleeve and spacer kit

4280 4x3x11.5 with 1150 RPM motor 3 HP and larger

4280 4x3x11.5 with 1750 RPM motor 7.5 HP and larger

4280 4x3x11.5 with 3500 RPM motor 10 HP and larger

4280 5x4x11.5, 4280 6x5x11.5 4280 8x6x11.5

Genuine Armstrong pump parts

Shipping rate for continental United States

$639.00

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Model: 4280M-11-1/2JP
Manufactured by: Armstrong Pump

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Items that are returned must be in original package and in new condition. We are not responsible for return shipping. They must be returned within 30 days of the purchase date. Any returns after 30 days will not be accepted. Refunds takes 4-7 days to be processed and appear back on the card used. A 25% restocking charge will be deducted from the original purchase price. If an item has been installed or altered in any way no refund will be processed. If you receive an item that is damaged please let us know ASAP so we can assist you.

Shipping Rate For Continental US Only. Please contact us for rates to Canada before ordering.

About Us

Welcome to Shortys HVAC Supplies. We are located on the South West side of Indianapolis, IN. Our purpose is to provide Original Equipment Manufacturer parts for the repair and maintenance upkeep of furnaces, air conditioners, ventilation systems and pumps to the general public as well as contractors and commercial building maintenance staff.

We sell brand new OEM parts for most manufacturers such as Carrier, Bryant, Payne, Lennox, Armstrong Aire, Ducane, Trane, American Standard, Heil, Tempstar, Nordyne, Goodman, Rheem, Ruud, York, Coleman, Modine, Reznor, Armstrong Pumps, Bell and Gossett pumps, Weil McLain, Lochinvar, McDonnell Miller, Hoffman Specialties, Manitowoc, Scottsman and we strive to make sure you get the correct part for your application.

Give us a call with the information from your equipment nameplate and we will do our best to help. We can be reached at our local phone number 317-821-8770, Toll Free 877-821-8770 or by fax at 317-821-8772. Our physical address is 7720 S Mooresville Rd in West Newton , IN 46183. Business hours are 8-5 EST M-F. Prior to making repairs please consult your manufacturers instructions and follow all safety precautions. Improper repairs can lead to equipment damage or personal injury or death. If you are unsure of your ability please call a professional company.

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Shortys HVAC Supplies LLC
877-821-8770
7720 S Mooresville RD
PO Box 146
West Newton, IN 46183
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04/02/2025

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