Product Description
Armstrong Stuffing Box / Adapter – Part No. 426750-011
Genuine Armstrong replacement stuffing box / adapter, Armstrong part number 426750-011, for Series 4380, 4280, 4280-50 pumps. Shown as item 40 on the Series 4380 drawing (parts list 6043.129 / 6043.130) – highlighted in the pictures above.
Specification: Combination stuffing box & adapter (items 40 & 50); Adapter (modified bronze fitted)
Fits these Armstrong pumps
- Series 4380 (vertical in-line) – pump sizes 1½ × 1½ × 8, 2 × 2 × 8, 3 × 3 × 8, 8 × 8 × 8
- Designation: 'M'
- Motor frames: 213JP, 215JP
- Pressure rating: 125#
- Drawing item: 40
- Series 4280 (close coupled end suction) – pump sizes 1½ × 1 × 8, 3 × 1½ × 8, 3 × 2 × 8, 4 × 3 × 8
- Designation: 'M'
- Motor frames: 213JP, 215JP
- Construction: Bronze fitted (125#), All iron
- Drawing item: 40
- Series 4280-50 (pool & spa (NSF-50)) – pump sizes 1½ × 1 × 8, 3 × 1½ × 8, 3 × 2 × 8, 4 × 3 × 8
- Designation: 'M'
- Motor frames: 213JP, 215JP
- Drawing item: 40
Other parts for this pump
Rebuilding a Series 4380 1½ × 1½ × 8? These parts are often replaced at the same time:
Not sure this is the right part?
Use our Armstrong Pump Parts Finder: choose Series 4380, your pump size and motor to see every part on the drawing. Or send us your pump’s nameplate details – call (416) 236-2338 or email sales@bramhambros.com. Bramham Bros is an authorized Armstrong dealer.
Product Videos
Custom Field
Brand Armstrong
Armstrong Part Number 426750-011
Part Type Adapter / Stuffing Box / Bracket
Fits Series 4380 1-1/2 x 1-1/2 x 8, 2 x 2 x 8, 3 x 3 x 8, 8 x 8 x 8
Fits Series 4280 1-1/2 x 1 x 8, 3 x 1-1/2 x 8, 3 x 2 x 8, 4 x 3 x 8
Fits Series 4280-50 1-1/2 x 1 x 8, 3 x 1-1/2 x 8, 3 x 2 x 8, 4 x 3 x 8
Drawing Item 4280: item 40; 4380: item 40; 4280-50: item 40
Specification Combination stuffing box & adapter (items 40 & 50); Adapter (modified bronze fitted)
Shipping cost: Inquire
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