Car & van doors
Door openings with a pinch-weld flange – the bulb seals against the closed door.
PROFILE SERIES / SIZE CHART
Edge trim with side bulb: C-series size chart (14 sections)
EPDM edge trim seal with a hollow bulb and a steel clip carrier, in 14 standard sections from C-14 to C-25A. Pick by grip range (the panel thickness) and bulb height, then quote by model number.
Illustrative imageOrders from 10 mSampling 7–10 daysPDF size chart
THE SHORT ANSWER
The C-series edge trim with side bulb has 14 standard sections. Grip range runs from 0.5–2 mm (C-17A) to 2.5–7 mm (C-24B) and bulb height from 5 mm to 15 mm. Choose the model whose grip range covers your panel thickness and whose bulb is slightly taller than the gap, then quote by model number.
- Sections
- 14, C-14 to C-25A
- Grip range
- 0.5–7 mm
- Bulb height
- 5–15 mm
- Material
- EPDM, steel clip carrier
- Order
- From 10 m
- Other sections
- Matched to your sample
SIZE CHART
Edge trim with side bulb – C series.
Find your section, then press Quote –
the model is added to the enquiry form.
| Model | Grip range | Bulb height | Groove depth | Compresses to | Quote |
|---|---|---|---|---|---|
| C-14 | 1–2 | 6 | 10 | 10 | Quote ↗ |
| C-14A | 1.5–3 | 5 | 8 | 10 | Quote ↗ |
| C-14C | 1–2 | 5 | 10 | 10 | Quote ↗ |
| C-15 | 1.5–3 | 5 | 10 | 10 | Quote ↗ |
| C-15A | 1–2.5 | 8 | 10 | 9 | Quote ↗ |
| C-17 | 1–2 | 7 | 10 | 11 | Quote ↗ |
| C-17A | 0.5–2 | 8 | 7 | 10 | Quote ↗ |
| C-20 | 1–2 | 9 | 10 | 11 | Quote ↗ |
| C-20A | 1–2.5 | 11 | 10 | 11 | Quote ↗ |
| C-22 | 1.5–4 | 11 | 15 | 12 | Quote ↗ |
| C-24A | 2–4.5 | 14 | 14 | 13 | Quote ↗ |
| C-24B | 2.5–7 | 11 | 14 | 14 | Quote ↗ |
| C-25 | 2–3.5 | 14 | 14 | 13 | Quote ↗ |
| C-25A | 1.5–3 | 15 | 13 | 12 | Quote ↗ |
All sizes in mm. Grip range = panel thickness the channel holds; compresses to = bulb height when the door is closed. Drawing is schematic, not to scale.
Download PDF size chart ↓ PDF · facts reviewed 2026-11-02
WHERE THEY ARE USED
Typical applications.
Not sure it fits? Send a photo of the old seal.
Boots & tailgates
Trunk lids, tailgates and hatch openings.
Machine & cabinet doors
Sheet-metal doors and access panels on machines and electrical cabinets.
Boats, caravans & trailers
Hatches and doors where the edge needs covering and sealing.
PRODUCTS
Related products.
Photos are representative; your seal is made to the confirmed section and colour.
Pinch-weld seal with side bulb
EPDM · door and trunk openings
Quote ↗
Edge trim with top bulb
Metal-reinforced carrier · EPDM bulb
Quote ↗
U-channel sheet-metal edge trim
Edge protection and sealing
Quote ↗
EPDM U-channel edge seal
Ozone-resistant EPDM
Quote ↗BUYER QUESTIONS
Size chart:
common questions.
Have a section in mind?
Dora can help with your enquiry.
01How do I pick the right C-series model?
Measure the thickness of the flange or panel edge – that must fall inside the grip range. Then measure the gap between the edge and the closed door: choose a bulb height a little larger than the gap so the bulb compresses.
02What does “compresses to” mean?
It is the bulb height when the door is closed and the bulb is squeezed – the gap the seal is designed to fill.
03Is there a steel clip inside?
Yes. All 14 sections have a steel clip carrier inside the EPDM channel so the trim grips the edge without glue.
04Can I order a section that is not on the chart?
Yes. Send a photo of the cut end next to a ruler, or a sample, and we match the closest section or make a new one. No minimum – orders from 10 m.
GUIDES
Related guides
Answers buyers ask before ordering.
08 / LET'S FIND YOUR PROFILE
Quote
your section.
A drawing, a clear cross-section photo, a sample or your gap size. Send what you have.
D
dora@onaseal.com ↗WhatsApp +86 159 2054 4735 ↗Dora
Sales Manager · replies usually within 2 hours
For a useful quotation
- Drawing or clear cross-section photo
- Key dimensions / gap size
- Material or performance requirement
- Estimated quantity
- Packing / branding requirement