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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSealing & InsulationFlawilSema Technics AG
Sema Technics AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of SEMA Technics AG is the development, manufacture and distribution of sealing systems and related products, such as press rings, ring gap seals, wall collars, floor and wall penetrations, articulated chains, modular pipe seals, fibre cement lining pipes, end caps, shut-off discs, house connections, slide bearings and accessories.

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Products & services

Industry:Sealing & Insulation
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Sema Technics AG

✓ Offered5
Sealing systems for pipe and cable penetrations
Press rings, annular space seals, wall collars, sealing plugs, floor and wall penetrations as well as modular pipe seals for reliable sealing of penetrations in concrete walls.
Building entries for water and gas
House entries for water and gas as well as wall penetrations for ground heat probes for installation and the tight passage of pipes through wall and ceiling.
Casing pipes and sealing elements
Fibre-cement casing pipes, sealing caps and shut-off discs for installation in wall and ceiling as well as for temporary or permanent closure of pipe openings.
Sliding bearings
Various sliding bearings for different applications and requirements in civil engineering, building construction and plant engineering.
Accessories and auxiliary equipment
Trench warning tapes, sliding and centring skids, flange seals, swelling tapes, two-component epoxy resin and earthing wall penetrations as supplementary accessories.
Trust & reputation

ranQ Trust Score of Sema Technics AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Sema Technics AG scores 79.7 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.83.524%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.72.110%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.78.08%
Sema Technics AG scores 70.4 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.64.612%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Sema Technics AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Sema Technics AG scores 6.3 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.6.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Sema Technics AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.9 out of 5 stars from 16 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.9
of 5

Aggregated from 16 reviews across all connected sources

Sources
GGoogle4.916
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Location

Schändrichstrasse 8
9230 Flawil
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-294.595.725
Founded
2021 · 5 years
Last commercial register change
April 27, 2022
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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