Transfemoral prosthetic liner UltraSeal Liner

transtibial

Product overview
ALPS UltraSeal silicone liner is designed for above-knee (AK) and below-knee (BK) amputees. It features a single-seal band available in three ring heights (High, Low, Ultra Low) to provide a reliable entry seal. The OptiSil inner surface conforms to the residual limb to reduce friction and irritation, while the premium outer fabric limits excessive stretch and pistoning.

Key benefits

• Less constrictive: premium outer fabric combining strength, durability and differentiated stretch for comfortable elasticity.
• Locking security: locking versions include a U-shaped reinforcement for secure and firm suspension.
• Skin-friendly silicone: OptiSil offers a thin, lightweight and smooth inner surface with significantly reduced friction versus standard silicone.

Technical details
Materials

• OptiSil — newest white silicone with smooth inner surface.
• High Density Gel (HD Gel) — firmer gel for enhanced control and stability.
• OptiGel — exclusive white gel option.
• EasyGel — contains antioxidants; suited for adherent scar tissue, irritated or sensitive skin and diabetic patients.
• GripGel — tacky surface to reduce bunching in the popliteal area; suited for healthy skin.
• Silicone — standard silicone options.

Fabric

• Grey fabric — highly reduced vertical stretch.
• Seamless knitted fabric — in-house knit with high-quality yarns.
• Beige fabric — horizontal and vertical stretch.
• Brown fabric — reduced vertical stretch.
• Black fabric — highly reduced vertical stretch.

Activity level

• k1 — Low activity
• k2 — Middle/low activity
• k3 — Middle/high activity
• k4 — High activity

Thickness

• 2MM
• 3MM
• 6MM
• 3/6MM
• AP Tapered

Suspension

• Cushion — for hypobaric (vacuum) suspension.
• Locking — U-shaped matrix; locking version offers combined locking suspension and sealing technology.

Sizing information
Measure the circumference of the residual limb at 6 cm above the distal end to select the appropriate size.

Size table — UltraSeal Liner HIGH RING (ring begins ~18 cm from distal center)
MEASURED SIZE (CM) | HIGH RING LOCKING | HIGH RING CUSHION
20-21 cm | USHSL20 | USHSC20
22-23 cm | USHSL22 | USHSC22
24-25 cm | USHSL24 | USHSC24
26-27 cm | USHSL26 | USHSC26
28-29 cm | USHSL28 | USHSC28
30-31 cm | USHSL30 | USHSC30
32-34 cm | USHSL32 | USHSC32
35-37 cm | USHSL35 | USHSC35
38-40 cm | USHSL38 | USHSC38
41-43 cm | USHSL41 | USHSC41
44-47 cm | USHSL44 | USHSC44

Size table — UltraSeal Liner LOW RING (ring begins ~13 cm from distal center)
MEASURED SIZE (CM) | LOW RING LOCKING | LOW RING CUSHION
20-21 cm | USLSL20 | USLSC20
22-23 cm | USLSL22 | USLSC22
24-25 cm | USLSL24 | USLSC24
26-27 cm | USLSL26 | USLSC26
28-29 cm | USLSL28 | USLSC28
30-31 cm | USLSL30 | USLSC30
32-34 cm | USLSL32 | USLSC32
35-37 cm | USLSL35 | USLSC35
38-40 cm | USLSL38 | USLSC38
41-43 cm | USLSL41 | USLSC41
44-47 cm | USLSL44 | USLSC44

Size table — UltraSeal Liner ULTRA LOW RING (ring begins ~8 cm from distal center)
MEASURED SIZE (CM) | ULTRA LOW RING LOCKING | ULTRA LOW RING CUSHION
20-21 cm | USUSL20 | USUSC20
22-23 cm | USUSL22 | USUSC22
24-25 cm | USUSL24 | USUSC24
26-27 cm | USUSL26 | USUSC26
28-29 cm | USUSL28 | USUSC28
30-31 cm | USUSL30 | USUSC30
32-34 cm | USUSL32 | USUSC32
35-37 cm | USUSL35 | USUSC35
38-40 cm | USUSL38 | USUSC38
41-43 cm | USUSL41 | USUSC41
44-47 cm | USUSL44 | USUSC44

Technical specifications

• Product name: UltraSeal Liner.
• Brand: ALPS.
• Compatible with AK and BK prostheses; available with locking or cushion suspension.
• Ring heights: High Ring (~18 cm), Low Ring (~13 cm), Ultra Low Ring (~8 cm).
• Materials: OptiSil, OptiGel, High Density Gel, EasyGel, GripGel, silicone.
• Outer fabrics: grey, beige, brown, black, seamless knit.
• Thickness options: 2 mm, 3 mm, 6 mm, 3/6 mm, AP Tapered.
• Activity levels supported: k1–k4.