Model 1900 Seal Maintenance Kit – Revision A Rod Connector Secured with a Roll Pin / Set Screw

SKU 55-001-0-04-01 Category
DescriptionQtyPart Number
1A) Custom Low-Profile Fastener150-001-0-08-02
1B) Flat-Head #12-24 Screw104-000-1-45-12
2A) Packing Gland Nut150-100-0-07-00
2B) Packing Gland Backing Washer104-000-5-40-02
2C) Packing Gland Cup Seal104-001-3-71-01
2D) Bottom Bushing150-100-0-08-05
3A) Top Plate O-Ring104-139-3-70-02
4A) Rod Connector Set Screw104-000-1-45-31
4B) Rod Connector Roll Pin104-000-1-62-36
5) Check Valve204-000-5-75-01
6) Internal Snap Ring204-000-5-75-01
7) Piston Cup Seal204-002-3-71-01
8) O-Ring Buna 0.24” ID104-070-3-70-01
9) O-Ring Buna 0.30” ID104-070-3-70-02
10) Link Washer1204-000-5-40-01
11) Hex Lock Nut, 3/8β€³-16204-000-1-50-20
12) Hex Lock Nut, 5/16β€³-18104-000-1-50-19
13) O-Ring Pick Tool155-001-0-07-00

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This Seal Maintenance Kit is for Rod Connectors Secured with a Roll Pin or Set Screw. It has items to address either of the previous model pump systems.

All Model 1900 pumps of this style have a built-in Drain Back Feature. Therefore, this maintenance kit includes the items necessary to maintain that system. It does not include the Drain Pin Removal Tool used to reach the bottom of the inside of the pump body. A socket extension with a 1/2” socket may work. Note that the Drain Pin Removal Tool has a special rubber insert in the socket to prevent dropping the Drain Pin during removal. This tool is available for purchase separately.

With this kit you will be able to replace all wear items and some hardware to keep your Bison Pump running strong!


Design and Construction

  • Replacements for all wear items
  • Additional stainless-steel hardware in case of loss
  • Seal Pick Tool to assist in uninstall/install of cup seals and O-rings




Related parts:


This part works with these pumps: