Seal Bushing
Chamfered support bushing seating and retaining the membrane shaft seal.
This is a dimension schematic, not a manufacturing drawing. Dimensions match the catalog data; request a quote with the part code to confirm before production.
Code & Size Table
Code, dimensions and tolerance for all 10 variants.
| Code | Diameter (mm) | Length (mm) | Feature | Tolerance | Std |
|---|---|---|---|---|---|
| MEMB-KCB-06 | 6 | 6 | ⌀4 | h8 · ⌀6: 0/−0.018 | seal pocket ⌀4 |
| MEMB-KCB-08 | 8 | 7 | ⌀5 | h8 · ⌀8: 0/−0.022 | seal pocket ⌀5 |
| MEMB-KCB-10 | 10 | 8 | ⌀6 | h8 · ⌀10: 0/−0.022 | seal pocket ⌀6 |
| MEMB-KCB-10S | 12 | 11 | ⌀6 · 2 steps | h8 | shouldered, seal pocket ⌀6 |
| MEMB-KCB-12 | 12 | 9 | ⌀8 | h8 · ⌀12: 0/−0.027 | seal pocket ⌀8 |
| MEMB-KCB-14 | 14 | 10 | ⌀10 | h8 · ⌀14: 0/−0.027 | seal pocket ⌀10 |
| MEMB-KCB-12S | 15 | 12 | ⌀8 · 2 steps | h8 · ⌀15: 0/−0.027 | shouldered, seal pocket ⌀8 |
| MEMB-KCB-16 | 16 | 11 | ⌀11 | h8 · ⌀16: 0/−0.027 | seal pocket ⌀11 |
| MEMB-KCB-18 | 18 | 12 | ⌀13 | h8 · ⌀18: 0/−0.027 | seal pocket ⌀13 |
| MEMB-KCB-16S | 20 | 15 | ⌀11 · 2 steps | h8 | shouldered, seal pocket ⌀11 |
Prices are for approved members.
Material & Tolerance
The standard material is listed below; also available in steel, stainless, brass and aluminium. Dimensions in mm; tolerances machined to ISO. Deviations (mm) are given for the nominal diameter according to the ISO 286-2 tables; thread tolerances (6g/6H) are to ISO 965. For custom sizes/tolerances, contact us with the part code.
Manufacturing Scope
Seal Bushing is a Membrane Press Spares family precision-turned on a Goodway SW-20, covering 10 variants — diameters ⌀6–20 mm, lengths 6–15 mm, standard material Brass (also steel, stainless steel or aluminium). Every variant's part code, dimension and tolerance is listed below; request a quote with the code you need.
The family is machined from ⌀20 mm bar stock; its longest variant is MEMB-KCB-16S at 15 mm. The family is produced by turning alone. Bores in this family run ⌀4–13 mm. All of it is completed in a single setup, without the part leaving the machine.
The variant with the highest length-to-diameter ratio is MEMB-KCB-06: 6 mm long at ⌀6 mm, L/D 1.0. A short, rigid body: what governs the result here is not deflection but diameter tolerance and surface finish.
Variants are machined to h8 tolerance; the smallest is MEMB-KCB-06 (⌀6 mm) and the largest MEMB-KCB-16S (⌀20 mm). The family includes bored, multi-step variants. Custom sizes, tolerances or materials are produced to the part code on request.
Need a size that isn't listed? We machine to your drawing — CNC contract machining. How these parts are made: What is a Swiss-type lathe?
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