armstrong mechanical seal manufacturer

Replacement seals for Armstrong Pumps, Inc.® Mechanical Seals products. Search by the OEM Part Number using the SEARCH function at the top of the page or use search by specification.

OEM names, brands, model or part numbers are for identification purposes only. Our components are designed to provide performance and service life equal to or better than the OE part when properly installed and properly applied. Springer Parts® carry a warranty equal to the OE component. Armstrong Pumps, Inc.® Mechanical Seals is a registered trademarks of its respective company. Springer Pumps, LLC is not a representative of, nor affiliated with Armstrong Pumps, Inc.® Mechanical Seals.

Armstrong Pump rebuild kits and shaft sleeves built by Mesco Corporation to manufacturer’s specifications. Contact Mesco directly for questions on model numbers and installation. We keep all of these Armstrong Pump Seal Kits and parts in stock.

975000-982 Armstrong Seal Kit 1.25 2A c-sc316 EPDM L-Cup for Armstrong models 4030, 4280, 4380 with 143-215 frames, 4360 1.5D, 4360 2D, & 4360 3D pumps.

816706-021 Armstrong Seal Kit 1/2" STD/BF/AB. Fits models S-25, H-32, S-35, H-41, S-45, S-46, S-55, S-57, H-51, H-52, H-53, H-54, 1050-1B, 1050-11/4B, 1050-11/2B, and 1050-2B. Please note image is generic.

816707-001 Armstrong Seal Kit 3/4 STD-BF-AB BR Buna for pump models S-69, H-63, H-64, H-65, H-66, H-67, H-68, 1060 1-1/2D, 1060 2D, & 1060 3D. Please note image is generic.

810134-000 Armstrong Seal Kit .625 Type 21 for all Series 4270 pumps. Please note picture is generic. *Please note this item is discontinued and replaced by 810134-001K Armstrong Seal Kit.

9975001-813 Armstrong Mechanical Seal Kit for Armstrong series 4030, 4280, 4360D, & 4380 style pumps with a 7/8" impeller bore. For NON-POTABLE water only.

9975001-833 Armstrong Mechanical Seal Kit For Non-Potable Water, 1.625 2A Acsc316EPDM O-Ring for Armstrong 4030 style pumps with M, MHD & MHXD type of bearing assemblies. For NON-POTABLE water only. For potable/drinking water use Armstrong...

9975001-837 Armstrong Mechanical Seal Kit for Armstrong 4030 style pumps with M, MHD & MHXD type of bearing assemblies. 9975001-837 Armstrong pkg seal 2.125 2A Acsc316EPDM O-Ring. For NON-POTABLE water only.

810150-150 Armstrong Packaged Sleeve & Spacer Kit Bronze "S" JM. Please note this item has been discontinued. Click here for the replacement 810150-251 Packaged Sleeve & Spacer Kit

880200-877 Armstrong Pump Mechanical Seal for Old E series pumps. If you need the new E.2 Seal Kit Please Find It Here. 880202-677 Armstrong E.2 Series Seal Kit.

975000-985 Armstrong Mechanical Seal Kit Pkg Seal 2.125 2A c-sc316 EPDM L-Cup for Series 4030 pumps with L style bearing assemblies. *Please note this seal kit is discontinued and replaced by the 8975000-98505K.

Armstrong Fluid Technology offers pump seal kits and other repair parts to support the installation and maintenance of their products. Pump seal kits are available individually or sometimes as a component of a complete repair kit.

Mechanical seal kits consist of a rotating seal head, spring and holder, and stationary seal seat with O-ring or l-cup. The pump casing gasket and other minor hardware components possibly required to reassemble the pump are not included. O-ring and l-cup style seats are interchangeable between centerline discharge pumps but not between centerline and legacy tangential discharge pumps.

Complete parts kits from Armstrong reduce the work to source items. Parts kits include all parts and related items required to complete replacement work, so you’ll never have to leave a repair incomplete just because you didn’t have all the necessary pieces for the job.

Remove the impeller and mechanical seal from the pump or motor shaft. The mechanical seal spring and spring holder usually come free with the impeller. The mechanical seal rotating element must be pried loose with pry bars or screwdrivers. Once loosened, the seal may be pulled free of the shaft.

The o-ring or l-cup mounted mechanical seal seat must be pried loose from the recess in the adapter. To do this: Separate the adapter from the bearing housing or motor. A screwdriver may then be used to push the seal seat out of the adapter from the rear.

Clean the shaft sleeve surface, removing the entire former seal elastomeric residue. Inspect for damage and replace if necessary. Inspect the water slinger and replace it if damaged.

Silicon carbide is a suitable replacement for ceramic, ni-resist, or tungsten carbide and is the seal seat of choice. Ceramic and silicon carbide are more brittle than ni-resist or tungsten carbide and should be handled accordingly.

Install a new seal seat in the adapter cavity, being sure the lapped (polished) surface of the insert is facing up. Ensure that the cavity has been thoroughly cleaned. Lubricate the outside of the seat elastomer o-ring or l-cup with a small amount of temporary rubber lubricant emulsion and press straight and even down into the cavity. Do not press the seat with bare fingers; use a clean cloth or the cardboard disc typically supplied with the seal. Contamination of the polished and lapped seat face could cause immediate leakage.

Lubricate the inside of the seal rotating assembly (the ‘rubber’ bellows) with a small amount of temporary rubber lubricant emulsion and slide onto the shaft sleeve with a twisting motion, carbon face first, until pressed to the carbon face. Ensure the seal is securely in place by pushing firmly with two screwdrivers simultaneously on opposite tabs of the seal hardware. Push the rotating seal retainer and seal hardware tabs simultaneously to ensure the elastomer is not over-stretched.

Remove the spring retainer from the seal spring and place the seal spring over the seal rotating assembly. Re-install the shaft sleeve spacer, if appropriate, and impeller key on the shaft, and set the seal spring retainer onto the impeller hub register. Slide the impeller into place on the shaft, taking care and ensuring the seal spring is kept in place on the seal rotating assembly and fits nicely into the retainer on the impeller hub. Secure impeller and finish reassembling pump.

Listen to the HVAC Know It All Podcast cover Armstrong pump maintenance, service, and pump curve troubleshooting with Joe Tibando from Armstrong Fluid Technology. They discuss the conditions necessary to ensure optimal performance of Armstrong pumps, including mechanical seals which are often the most common failing item on pumps.

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.