Reliance Trenchless Technology logo
Request a quote
Reliance Trenchless Technology

Pre-order questionnaire · RT-Q-SEAL · Rev. C

Internal Pipe Joint Seal & End Seal Questionnaire

Everything we need to quote internal joint seals and liner end seals. Save a draft at any time, download your answers as a PDF, or send them straight to our engineers.

Issued 2026-10-21 · Return to sales@reliancetrenchless.com · reliancetrenchless.com/questionnaires/internal-pipe-seal

Send to Reliance

Answers are saved automatically on this device as you type.

Download PDF opens your browser’s print window – choose “Save as PDF”. Prefer paper? Download the blank form.

How to completeTick every option that applies and fill in the fields. Give dimensions in millimetres (mm) unless stated, measured on site where possible. Questions marked * are needed before we can quote. If you are unsure, choose “Not sure” – an honest blank is better than a guess, and our engineers will follow up.

01Customer and projectREQUIRED

Include country code

City, country

Port or address · EXW / FOB / CIF / DAP

Date

02Medium and temperatureREQUIRED

Why we ask:the medium and its temperature decide the rubber compound and the grade of the stainless steel rings.

The pipe carries
Medium temperature

°C

°C

03Host pipeREQUIRED

Pipe material(choose one)

Sound, corroded, cracked, exposed aggregate, roots, deposits…

mm

mm

Can a person safely work inside the pipe?(choose one)

04Seal type and sizesREQUIRED

Why we ask:each seal is made to one diameter. Measure the internal diameter (ID) vertically and horizontally at the actual seal position – the nominal size (DN) alone is not enough.

Section of an end seal at a CIPP liner end, showing A as the host pipe internal diameter and B as the liner internal diameter.
End seal at a liner end: A = host pipe ID, B = liner ID
Section of an internal joint seal across a pipe joint, showing A as the pipe internal diameter.
Joint / point seal across a pipe joint: A = pipe ID

Seals required(at least one row)

#Seal typeA vertical (mm)A horizontal (mm)B liner ID (mm)Quantity (sets)
1
2
3
4
5
End sealsIf the liner ID is not yet known, give the liner wall thickness t instead: B = A − 2t.

05Seal width and rings per setREQUIRED

Why we ask:the seal must overlap sound pipe on both sides of the joint or defect, and its width fixes the number of ring seats.

Option A rubber seal profile, 350 mm wide and 21 mm high with an 8 mm body and two ring seats.
Option A – 350 mm wide, 1 seal + 2 rings per set
Option B rubber seal profile, 500 mm wide and 17.5 mm high with a 10 mm body and three 85 mm ring seats.
Option B – 500 mm wide, 1 seal + 3 rings per set
Seal width(choose one)

mm

If not a plain joint

pcs

06Ring materialREQUIRED

Stainless steel ring grade(choose one)

07Pressure conditionsREQUIRED

Why we ask:the seal must resist groundwater from outside as well as any vacuum or pressure inside the pipe. Leave a value blank if it is not known.

m water column

bar

Write 0 if none

bar

Write 0 for a gravity line

Air / water / vacuum and test pressure

Negative pressureThe pressure inside the pipe is lower than outside, so air or water is drawn in – e.g. pump surges or siphoning. 1 bar = 100 kPa ≈ 10 m water column.

08Installation

Installation support

09Attachments

Why we ask:photos, CCTV and drawings shorten our review. After sending, email the files to sales@reliancetrenchless.com quoting your reference.

I can provide

Up to 5 https:// links, one per line (shared folders, cloud storage)

10Additional requirements

Completed by

Name
Signature
Date

FOR RELIANCE USE ONLY

Received / reviewed by
Seal profile / rubber compound
Ring material / rings per set
Open questions to customer
Quotation / drawing no.

Send to Reliance

Our engineers review every questionnaire and reply with a recommendation, open questions or a quotation. Your draft stays on this device until you clear it.

10 required questions are still blank.

Reliance recommendations are based on the information supplied in this form. The final model, dimensions and quantities are those stated in our written quotation and drawing, which the customer confirms before production.