Armstrong 8B2 2-1/8″ OEM Mechanical Seal — #975002-374

Direct-fit Armstrong 8B2 mechanical seal replacement for 2-1/8″ applications used in the Armstrong 4300 Series (Frames 364–449). This seal cross-references Armstrong #975002-374 and PS-8035 (PS 8035), and is commonly searched by alternate numbers 975000-957, 975002-073, and VG-975002374 for fast, accurate ordering.

Upgraded materials note: We supply this seal in SiC/SiC faces with Viton (FKM) (upgrade from typical OEM Carbon/SiC/Viton) for improved heat handling, abrasion resistance, and long-life reliability in hot-water and industrial service.

Variations (select from dropdown):

• Seal Only: 8B2, 2-1/8″, SiC/SiC/Viton, T-25 clamp, 316SS hardware

• Seal + Bushing: Includes Armstrong 2-1/8?” bushing #425520-003
  Image note: product photos may show the bushing separately for clarity.

Specs:

• Size: 2-1/8″

• Clamp: T-25

• Metals: 316 Stainless Steel

• Faces: Silicon Carbide / Silicon Carbide (SiC/SiC)

• Elastomer: Viton (FKM)

• OEM reference: 975002-374

Fitment & applications

• Series: Armstrong 4300

• Frames: 364–449

• Example application shown: 10×10×15, 125 HP (verify seal type/size against your nameplate or existing seal)

Cross Reference / Alternate Part Numbers

PS-8035 (PS 8035) • 975002-374 • 975000-957 • 975002-073 • VG-975002374

What is included:

• 1 × 8B2 2-1/8″ seal (SiC/SiC/Viton, T-25, 316SS)

• (Bushing included only with the Seal + Bushing option)

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