Name: Prime Hardware
Rating: 4.9 (110 reviews)

Description & Specifications FAQs

Kilargo

KILARGO IS5121SI SILICONE SWEEP DOOR SEAL - AVAILABLE IN VARIOUS FINISHES AND SIZES

The Kilargo IS5121si is a silicone sweep seal in a slim, angled aluminium carrier, fitted around heads, jambs, door bottoms and meeting stiles of swing, revolving, tilt-up and roller doors. Its flexible silicone fin seals gaps of 19–24mm against smoke, draughts, dust and weather.

Silicone sweep sealGap 19–24mmSmoke ratedClean rooms OK

Key Features

High-performance flexible silicone fin (outlasts and out-seals rubber and PVC sweeps)

Slim-line carrier aesthetically angled to avoid dust build-up

Suits swing, revolving, tilt-up and roller doors – and pivot-action smoke doors

Excellent for clean-room applications

Fire tested to AS 1530.4; conforms with BCA C3.4; acoustically tested

Screw-fix or self-adhere: screws and aggressive backing tape supplied

Silver carrier/grey fin or black carrier/black fin; Australian made

What It's Used For

Choose the IS5121si over a brush seal when smoke sealing, acoustics or hygiene matter: the continuous silicone fin creates an unbroken air seal that brush filaments can't, and it wipes clean – ideal for hospitals, labs and food areas (antimicrobial option available).

It's also the recommended sweep for pivot-action smoke doors, where drop seals can't operate.

Specifications

Type	Silicone sweep seal in angled aluminium carrier
Suits	Swing, revolving, tilt-up, roller & pivot doors
Gap size	19–24mm
Fixing	Screw-fixed or self-adhesive (both supplied)
Finish	Silver/grey fin or black/black fin
Antimicrobial option	Yes – select at checkout (AM silicone gasket)
Available sizes	1000mm, 1250mm, 1500mm, 1750mm, 2000mm, 2250mm, 2500mm, 2750mm, 3000mm, 3500mm, 4000mm, 4500mm, 5000mm
Available finishes	Black Anodised, Clear Anodised
MPN	IS5121si

Compliance & What It Means

Fire tested — AS 1530.4 / AS 1905.1. Fire tested to AS 1530.4 (the Australian standard fire-resistance test) in accordance with AS 1905.1, the standard for fire-rated doorsets. In plain terms: this seal has been proven on proprietary fire door assemblies, so it can be specified on fire doors without compromising the door's fire rating.

Smoke sealing — BCA/NCC Specification C3.4. Conforms with Building Code of Australia (NCC) Specification C3.4 smoke sealing requirements. Smoke — not flame — is the biggest killer in building fires, and C3.4 sets out how door gaps must be sealed so escape routes stay clear of smoke.

Acoustic tested — AS 1191 / ISO 140-3 / ISO 10140-2. Acoustically tested in accordance with AS 1191, ISO 140-3 and ISO 10140-2 — the laboratory standards for measuring sound insulation. Correctly sealed doors are the difference between a quiet room and a noisy one; this seal is proven to cut sound leakage through the door gaps.

Antimicrobial option available. Also offered in an antimicrobial (AM) silicone version, formulated to inhibit the growth of bacteria and mould on the gasket surface — specified in hospitals, aged care, laboratories and food-preparation areas.

Fire and smoke approvals apply to tested, proprietary door assemblies. Always confirm suitability for your specific door type and required rating with your fire door manufacturer or building certifier.

Ordering & dispatch. This is a non-stocked, specialty architectural item ordered directly from the Kilargo factory line. Please allow a standard handling time of 5–8 business days after cleared payment before dispatch. Need it sooner, or not sure which seal suits your door? Call Prime Hardware on 1800 329 028.

Brush seal or silicone sweep - which should I choose?

Brush seals excel at big, uneven, high-cycle gaps (draughts, dust, pests). Silicone sweeps like the IS5121si form a continuous air-tight wipe - the choice when you need smoke sealing, acoustic performance or a cleanable hygienic surface.

What gap does the IS5121si seal?

It suits gaps of 19–24mm. Measure between the door bottom (or stile) and the sealing surface with the door closed; outside this range, call Prime Hardware on 1800 329 028 for the right alternative.

What lengths are available?

Standard lengths are 1000mm and 2250mm, with 250mm increments available from 1000mm to 5000mm. Seals can be cut down on site for an exact door width.

What is the antimicrobial (AM) option?

The AM version uses antimicrobial silicone that inhibits bacteria and mould growth on the fin - specified for hospitals, aged care, laboratories and food-preparation areas.

What is the handling time for this item?

This is a non-stocked, specialty architectural item ordered directly from the Kilargo factory. Allow a standard handling time of 5–8 business days after cleared payment before dispatch. If your project needs express turnaround, call Prime Hardware on 1800 329 028 to confirm current factory lead times.

I'm not sure this is the right seal for my door — can I get help?

Yes. Door sealing depends on your door type, the gap sizes and what you need to seal against (fire, smoke, sound, weather or drafts). Call Prime Hardware on 1800 329 028 with your door details and gap measurements and we'll confirm the right Kilargo seal, size and finish before you order.