Dr. Fixit Feviseal Acetoxy
The single-component acetoxy silicone that Delhi NCR glaziers reach for when aluminium frames, glass panels and sanitaryware joints need a fast, self-priming seal — stocked and applied by Space Arc Engineering.
What is it?
A single-component, moisture-curing acetoxy silicone sealant. It ships ready to use in a cartridge, skins over in minutes and cures into a permanently flexible rubber that moves with the joint instead of cracking.
Where is it used?
Aluminium window and door frame glazing, glass-to-glass and glass-to-aluminium joints, sanitaryware and wash-basin sealing, kitchen counter edges, mirror fixing beads and non-oily wood-to-glass trims — mostly indoor and covered domestic, retail and office work rather than exposed structural facades.
Why use it?
It bonds to glass, ceramic and anodised aluminium without a primer, stays workable long enough to tool a clean bead, then skins over within 40 minutes. Buyers pick it over generic hardware-store silicone mainly for consistent batch quality, a documented TDS and easy availability through an authorised Dr. Fixit channel.
How is it applied?
Clean and degrease the joint faces, mask both sides of the gap, gun the sealant from the cartridge in a continuous bead, tool it immediately with a putty knife to remove air voids, pull the tape before the surface skins over, then leave it undisturbed to cure for at least 7 days at above 50% relative humidity before the joint sees water or load.
About Dr. Fixit Feviseal Acetoxy
Feviseal Acetoxy is Pidilite’s acetoxy-cure silicone sealant, sold through the Dr. Fixit range for the kind of small, everyday glazing and sealing jobs that don’t need a structural engineer’s sign-off — an aluminium sliding window that’s lost its rubber gasket, a glass partition in a shop, a wash basin that needs re-sealing to the counter. It’s a single-component paste: no mixing, no pot life to race against, just cut the nozzle, load the gun and run a bead. As it cures on contact with atmospheric moisture it gives off the faint vinegar smell typical of acetoxy chemistry — that’s the acetic acid by-product, and it’s also the reason this sealant grips glass, ceramic and vitreous surfaces without a separate primer coat.
Where it differs from a general-purpose bathroom sealant is in how deliberately narrow its intended use is. Pidilite’s own data sheet rules it out for structural glazing, for masonry and cementitious surfaces, for anything that will later be painted, and for fish tanks or food-contact work — largely because acetoxy cure is mildly corrosive to reactive metals and can etch alkaline substrates like fresh concrete or marble. Used within that window — aluminium, glass, ceramic, sanitaryware, non-oily wood — it performs well: good UV stability for sunlit frames, a wide service range from -60°C to +180°C, and up to 95% recovery after the kind of daily expansion and contraction an aluminium window frame goes through. Space Arc supplies it ex-stock in both the 240 ml and 280 ml cartridge sizes and can apply it as part of a glazing or interior fit-out job across Delhi NCR.
The technical insight
The one technical distinction worth knowing before you specify this sealant is acetoxy versus neutral cure. Acetoxy-cure silicones like Feviseal Acetoxy react with atmospheric moisture to release acetic acid, which is what gives them their fast skin time and strong, primerless grip on glass and ceramic — but that same by-product is mildly corrosive to copper, brass and some coated or galvanised metals, and can leave a haze or slight etch on marble and other calcareous stone. Neutral-cure silicones avoid that reaction and are the safer default around sensitive metal fittings, ACP panels or natural stone. For plain glass-to-aluminium and glass-to-ceramic glazing work, acetoxy is the more common and more economical choice, which is why it’s the grade Space Arc keeps on hand for routine glazing and sanitaryware calls.
Where it is used
- Fixing glass panes into aluminium window and door frames in place of a rubber gasket
- Glass-to-glass butt joints in shop-front displays, partitions and showcase counters
- Sealing wash basins, kitchen sinks and countertops to the wall or slab edge
- Mirror fixing beads and bathroom cabinet glass trims
- Non-oily wood-to-glass joints in furniture and interior joinery
- Touch-up resealing of perimeter glazing beads on existing aluminium curtain wall units (non-structural work only)
- General ceramic and vitreous tile trim sealing where a primerless bond is needed
- Ready-to-use small-repair jobs — replacing a perished or discoloured old sealant bead around a window or basin
Key advantages
- Ready-to-use single-component cartridge — no mixing, no measuring, no pot-life pressure
- Self-priming on glass, ceramic and vitreous surfaces, saving a prep step most other sealants need
- Fast tack-free time within 40 minutes, so masking tape can come off the same day
- Wide service temperature range from -60°C to +180°C, comfortable for sun-facing window frames
- Up to 95% elastic recovery after movement, so it keeps pace with aluminium’s thermal expansion and contraction
- Non-sagging thixotropic paste that stays put in vertical and overhead joints instead of slumping
- Good UV resistance, so exposed frame joints don’t chalk or crack quickly
- Sold in small 240 ml and 280 ml cartridges suited to single-window or single-basin repair jobs, not just bulk site orders
Limitations & considerations
- Acetoxy cure gives off acetic acid while curing, which can corrode copper, brass and other reactive metals nearby
- Not rated for structural glazing — don’t use it to load-bear glass facade panels
- Manufacturer advises against use on masonry, concrete or cementitious surfaces — bond and appearance aren’t reliable there
- Cannot be over-painted; because it stays permanently flexible, paint applied on top will crack and flake off within weeks
- Not suitable for fish tanks, constant water immersion or food-contact applications
- Cure needs above 50% relative humidity and above 5°C — cold, dry Delhi winter mornings can slow it down noticeably
Selection & best practice
Keep the joint faces clean, dry and degreased before gunning the sealant — dust, oil or old sealant residue on the substrate is the single biggest cause of adhesion failure. Mask both sides of the joint for a neat line, run a continuous bead without air pockets, and tool it immediately with a putty knife or similar — this pushes the sealant into full contact with both surfaces and gives a clean finish. Pull the masking tape before the surface skins over, not after. Full cure takes about a week at above 50% relative humidity, and the sealant shouldn’t see standing water or structural movement before that. In peak Delhi winter, when indoor humidity drops, curing slows down — plan a day or two of buffer before handover, and clean tools with kerosene or a similar solvent while the sealant is still wet.
Specifications
| Chemistry / cure type | Single-component, acetoxy-cure silicone sealant |
| Density | 0.94 – 1.00 g/cc |
| Tack-free time | Max. 40 minutes |
| Curing time | ~24 hours per 1–1.5 mm depth at 25°C; full cure needs min. 7 days at >50% RH |
| Hardness | Shore A 15–25 |
| Tensile strength at break (ASTM D412) | Min. 0.5 N/mm² |
| Elongation at break (ASTM D412) | Min. 375% |
| Service temperature range | -60°C to +180°C |
| Pack sizes & shelf life | 240 ml and 280 ml cartridges; 12 months from date of manufacture |
Industry use cases
Residential — apartment window repair
Re-sealing an aluminium sliding window in an NCR flat after the original rubber gasket perished and started letting in dust and rainwater.
Retail fit-out
Glass-to-glass joints on shop-front display counters and showcases, where a clear, primerless bond matters for appearance.
Kitchen renovation
Sealing a modular kitchen counter and sink rim to the wall and platform edge during a re-do.
Office interiors
Framing and sealing glass partitions set into aluminium sections in a commercial fit-out.
Facade maintenance
Touch-up resealing of perished perimeter glazing beads on an existing aluminium curtain wall — cosmetic and weather-seal repair, not structural glazing.
Frequently asked questions
Is Feviseal Acetoxy the same as the silicone sealant sold for bathrooms in hardware stores?
Can I paint over the joint after it cures?
How soon can the joint get wet — can I use the basin the same day it’s sealed?
Will this corrode my aluminium frame or metal fittings?
Does Space Arc only sell the cartridge, or can you apply it as well?
How many cartridges do I need for a standard window?
How we position Dr. Fixit Feviseal Acetoxy
Within the Dr. Fixit and Pidilite stable, Feviseal Acetoxy sits apart from the brand’s better-known waterproofing coatings and repair mortars — it’s a glazing and sealing product from Pidilite’s sealants line, not a membrane or a crack-repair compound, so don’t confuse it with Dr. Fixit’s Pidiproof, Roofseal or Crack-X ranges when scoping a job. Within sealants specifically it’s the acetoxy, general-purpose grade; for structural glazing, expansion joints in facades, or weatherproofing joints that need a neutral-cure or movement-rated construction sealant, look instead at Pidilite’s own neutral-cure silicone options or at Fosroc’s Nitoseal range, which is built for heavier structural and expansion-joint duty rather than small glass-and-aluminium glazing work. Space Arc can advise on the right grade once we know whether the joint is decorative glazing or a load-bearing movement joint.
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