Alpha® TruSeal Sealing Liner

Alpha TruSeal offers an unsurpassed seal with its exceptional seal quality with four fins, in a unique stepped design, moulded directly into the liner body. The stepped design creates two points of contact per fin against the socket wall and ensures each fin reflects upwards preventing any gaps forming in the seal.

*Based on internal testing commissioned by WillowWood in September 2020 with an average of 4,000 steps per day.

The Alpha TruSeal Liner is available in two profiles both conical and cylindrical to accommodate various limb shapes.

Features and benefits

    • Four stepped fins offer unsurpassed vacuum retention
    • Smooth satin coating reduces resistance during donning and doffing
    • Liner surface resists abrasion and extends liner life



Product Part Number: S494-11 Category:

Additional information

Amputation Level


Interface Material



Durable, Sealing

Conical Ordering Information

Example: S494-1132 for a size 32 TruSeal™ conical liner

Prefix Size
Proximal measurement 20cm from distal37-49cm39-51cm40-54cm42-58cm44-62cm46-66cm49-72cm52-78cm55-85cm
Distal measurement 4cm from distal25-26.5cm26.5-28cm28-30cm30-32cm32-34cm34-37cm37-40cm40-43cm43-47cm

Measuring Guide

Please refer to the table below.

Cylindrical Ordering Information

Example: S495-1147 for a size 47 TruSeal™ cylindrical liner

20 cm
from distal
39 - 44 cm41 - 47 cm44 - 53 cm47 - 59 cm50 - 65 cm54 - 74 cm
4 cm
from distal
32 - 34 cm34 - 37 cm37 - 40 cm40 - 43 cm43 - 47 cm47 - 51 cm

Silicone Volume Management Pads ordering information

The Silicone Volume Management Pads are placed inside the TruSeal liner. For patients who struggle with gapping inside their liner, the pads allow effective volume management control without compromising fin security.
Example: ALA-VM-S2 for a pack of 2 Silicone Volume Management Pads

Part numberDescription
ALA-VM-S2Pack of 2 (0,45 cm and 0,75 cm)


TruSeal Sales Sheet

Alpha TruSeal Liner Testimonial

Alpha TruSeal IFU

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