Name: Prime Hardware
Rating: 4.9 (110 reviews)

KILARGO IS8035SI HEAVY DUTY DOOR BOTTOM SEAL - AVAILABLE IN VARIOUS SIZES AND FINISHES - primehardware

KILARGO IS8035SI HEAVY DUTY DOOR BOTTOM SEAL - AVAILABLE IN VARIOUS SIZES AND FINISHES

Description & Specifications FAQs

Kilargo

KILARGO IS8035SI HEAVY DUTY DOOR BOTTOM SEAL - AVAILABLE IN VARIOUS SIZES AND FINISHES

The Kilargo IS8035si is a medium-duty automatic door bottom seal that can be face-fixed or semi-rebated to single-action doors, with a flexible PVC cover strip concealing the screw line for a clean finish. Its spring-loaded mechanism drops the silicone gasket as the door closes, sealing 3–10 mm gaps against fire, smoke, sound and draughts.

Automatic drop sealFace-fix or semi-rebateGap 3–10mmConcealed screw lineFire & smoke rated

Key Features

Face-fix or semi-rebate into a 37mm deep x 13mm wide machined groove

Flexible PVC cover strip hides the screw line – neat architectural finish

Brass adjustment button and spring mechanism lift the seal clear when the door opens

Assists AS 1428.1 closing-force compliance; certified GVYI/GVWZ/GVWZ7.R26629

Push-fit reinforced nylon end plates protect the mechanism

Silver or black anodised aluminium with matching gasket and cover strip

Durability tested beyond 1,000,000 cycles; Australian made

What It's Used For

Specify the IS8035si on fire doors, smoke doors and acoustic doors where the seal will be seen – its covered screw line gives a tidier face-fixed appearance than exposed-fastener seals. Common in hotels, apartments, offices, education and healthcare buildings.

Like all Kilargo automatic bottom seals it also blocks draughts, dust, light and insects, improving energy efficiency and comfort on external and internal doors alike.

Specifications

Type	Automatic (drop-down) door bottom seal – medium duty
Mounting	Face-fixed or semi-rebated (37mm x 13mm groove)
Suits	Single-action hinged doors
Gap size	Min. 3mm / max. 10mm
Trim	PVC cover strip over screw line; nylon push-fit end plates
Finish	Silver or black anodised, matching silicone gasket
Antimicrobial option	Yes – select at checkout (AM silicone gasket)
Available sizes	380mm cuts back to 280mm, 600mm cuts back to 380mm, 820mm cuts back to 600mm, 920mm cuts back to 820mm, 1070mm cuts back to 920mm, 1220mm cuts back to 1070mm
Available finishes	Black Anodised, Clear Anodised
MPN	IS8035si

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.

Certified — GVYI.R26629, GVWZ.R26629, GVWZ7.R26629. Carries independent product certifications (GVYI.R26629, GVWZ.R26629, GVWZ7.R26629), giving certifiers and building surveyors documented evidence of compliance.

Smoke tested — AS 1530.7 / AS 6905. Holds medium-temperature (200°C) smoke leakage approvals to AS 1530.7, compliant with AS 6905 on proprietary door assemblies. This is the test the BCA relies on for smoke doors — it verifies the seal keeps hot, toxic smoke from leaking past the door for the required 30 minutes.

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.

Door closing force — AS 1428.1. Contains a high-efficiency, low-friction mechanism designed to help door assemblies meet the maximum opening/closing force requirements of AS 1428.1 (Design for Access and Mobility) — important on accessible doors fitted with door closers.

Durability — 1,000,000+ cycles. Durability tested through more than 1,000,000 open-and-close cycles — engineered for decades of service in high-traffic commercial buildings.

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.

How does the IS8035si automatic door bottom seal work?

A spring-loaded mechanism inside the seal lifts the silicone gasket clear of the floor the moment the door opens, so there is no drag or floor wear. As the door closes, an adjustable strike button presses against the door jamb and automatically drops the gasket down onto the floor, sealing the gap under the door.

Is the IS8035si fire and smoke rated?

Yes. It is fire tested to AS 1530.4 in accordance with AS 1905.1 on proprietary fire door assemblies, holds medium-temperature smoke leakage approvals to AS 1530.7 (AS 6905) and conforms with BCA Specification C3.4 smoke sealing requirements. Always confirm the approval matches your specific door type with your fire door manufacturer or certifier.

What size floor gap does the IS8035si seal?

It automatically seals door-bottom gaps from 3mm up to 10mm. Measure the gap between the underside of the door leaf and the finished floor when the door is closed - if your gap falls outside this range, call Prime Hardware on 1800 329 028 and we'll recommend an alternative Kilargo seal.

Can the IS8035si be cut down to fit my door width?

Yes. Each standard length can be cut back on site to an exact dimension: 380mm cuts to 280mm, 600mm to 380mm, 820mm to 600mm, 920mm to 820mm, 1070mm to 920mm and 1220mm to 1070mm. Order the standard length that your door width falls within, then trim to suit.

What is the antimicrobial (AM) option?

The IS8035si can be ordered with an antimicrobial silicone gasket. The silicone is compounded with an additive that inhibits bacteria and mould growth on the gasket surface - the version specified for hospitals, aged care, laboratories and food-preparation areas. Select the Anti-Microbial option when ordering.

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.