// Rubber and gaskets · Custom part quotes
Custom rubber part and gasket quotes, read from the print up to the point a person prices them.
For custom molders and gasket fabricators. One job, tried on RFQs your shop already quoted. AI reads a customer's print, sample description or RFQ email into your quote sheet: compound or material callout, durometer, dimensions and tolerance class, tooling needed, annual quantity, and every callout someone must clear up before pricing. Your estimator checks each line and sets the price.
- Past RFQs
- 20 to 30
- Live quotes touched
- None
- System access
- None
// The one job
A customer describes a part. A quote sheet comes back with its questions.
A rubber part rarely arrives fully described. One buyer sends a print with a compound callout and a tolerance note, another emails a sketch and asks for the same as last time, and a third describes a worn seal and what it sat against. Before anyone can price it, your estimator works out what the part is made of, how hard it is, what size it has to hold, which mold or die it needs and how many are wanted in a year.
In the proof of concept, AI reads copies of RFQs you already answered and fills in your quote sheet, naming where each value was read. A missing compound, a durometer with no scale, a tolerance note with no class, or an annual quantity nobody stated becomes a line on the question list. Prices stay off the draft; your estimator sets them.
your quote sheet
// What the print leaves out
Where a custom rubber quote goes wrong
Molded or cut decides the first question. A flat gasket usually goes to a press or a cutting table and a three-dimensional seal to a mold, and the paperwork differs from there. For cut work, a 2021 trade article on gasket cutting describes a clicker press driving a rolled steel die through the sheet, economical at larger quantities but needing a die for each size and regular die upkeep, against a CNC cutter running an oscillating or drag knife from a CAD file, nesting parts on the sheet with no die at all. The annual quantity is what points to one or the other. The draft records the quantity, the material and its thickness, and any die number the customer named, and it does not pick the method.
Molding has its own tooling questions. Compression, transfer and injection tools differ in how the rubber reaches the cavity, what they cost and how much flash is left to trim, and a print may name one or leave it to you. A part bonded to a metal insert adds a bonding step and perhaps an adhesion test under ASTM D429, Rubber Property, Adhesion to Rigid Substrates. The draft notes whether the RFQ says a mold exists, who owns it and how many cavities it has, and turns everything else into a question.
The tolerance note is a code. Molded prints commonly carry an ARPM designation, A1 high precision, A2 precision, A3 commercial or A4 basic, often still written RMA, with finish and flash extension marks beside it. Fixed dimensions, cut into one mold plate, and closure dimensions, which span the plates and move with flash thickness, take different tolerances. An ISO print may cite ISO 3302-1:2014 and its M classes instead, a standard for molded, extruded and calendered solid rubber that does not reach precision toroidal sealing rings. The draft carries the class as written, and a bare per-RMA note with no class goes on the question list.
The compound line decides whether a tool fits. Rubber shrinks in the mold by an amount that depends on the compound, so a cavity is cut for the compound it will run. Custom molders' published notes put silicone and FKM generally above nitrile and EPDM, and softer stocks above harder ones, and warn that a compound or durometer change on an existing cavity can push a part out of tolerance. Polymer names come from ASTM D1418, Rubber and Rubber Latices, Nomenclature, and hardness needs a scale, usually Shore A under ASTM D2240, Rubber Property, Durometer Hardness. So the draft records polymer, durometer and any or-equivalent note, and flags a change from what your records show that part last ran in.
Your reviewer. The owner names the person who knows your quoting best, usually the lead estimator, and that person holds each draft against the sheet that was built: compound, durometer, tolerance class, tooling, quantity, and every question your team actually had to ask. Include a sample-only RFQ, a bonded part, a cut gasket and one you passed on.
// What you send
What your estimating desk pulls
20 to 30 RFQs, as they arrived
Prints, sketches, sample descriptions and RFQ emails, with any spec sheets the customer attached. A mix of molded parts and cut gaskets makes the fairest test.
The sheets that answered them
The quote sheet your estimator built, the quote that went out, and the questions sent to the customer along with the answers that came back.
How your desk quotes
Your rate sheet, minimums, how tooling is split from piece price, and when a sample-only part gets quoted at all. A paragraph from your estimator is enough.
Your compound and tooling lists
The compound numbers you run and your rule die and mold lists, as exported or typed up, so drafts can name what you already own.
NDA, then copies
It is signed before any print moves. If a customer's agreement keeps a drawing in your building, we build look-alike RFQs with you that keep the same kinds of callouts and gaps. Nobody logs in to your quoting or ERP system.
// Before it starts
Settled before any print leaves the office
The owner signs off on each of these before a single RFQ is shared.
- Your reviewer
- The owner's pick, usually the lead estimator
- Success criteria
- In writing: which fields must match, and how a sample-only RFQ is scored
- The mix
- Molded parts and cut gaskets, chosen by your reviewer
- Stays off the draft
- Piece prices, tool costs and the decision to quote or decline
- Price
- A range for the live job, given up front
- NDA
- Signed before any print moves
// How the test is judged
Each draft against the sheet your estimator built
| Across the same 20 to 30 RFQs | Your estimator's sheet | Draft from the test |
|---|---|---|
| Compound or material callout read as written | Filled in from your RFQs | Filled in from your RFQs |
| Durometer and its scale | Filled in from your RFQs | Filled in from your RFQs |
| Dimensions and tolerance class, flash and finish marks included | Filled in from your RFQs | Filled in from your RFQs |
| Mold or die needed, and any tooling already on your lists | Filled in from your RFQs | Filled in from your RFQs |
| Annual quantity and lot size as the customer stated them | Filled in from your RFQs | Filled in from your RFQs |
| Questions raised that your estimator also had to ask | Filled in from your RFQs | Filled in from your RFQs |
| Time from RFQ received to a sheet ready to check | Filled in from your RFQs | Filled in from your RFQs |
// After a yes
About 30 days on new RFQs
With your reviewer's approval, new prints and RFQ emails get the same draft sheet and question list for about 30 days.
Your estimator prices, changes or declines every one, and a person approves each sheet before it goes anywhere. How approved sheets reach your quoting system gets settled for the live month, and not before.
// Later, one at a time
What the quote desk could hand off next
- 01Next
Material callout checks
The compound review behind each callout, with every suffix and what your data shows for it, for your quality person to decide.
- 02Then
Die and mold lookups
New prints checked against the rule dies and molds you already own before anything is quoted as new tooling.
- 03After that
Mixer batch certificates
Certificates from your compound mixer matched to the numbers you run, batch by batch.
// One hard limit
It never touches a live quote or sets a price.
Copies of past RFQs are all it reads. It never touches your quoting or ERP system, never sends anything to a customer, never decides that a compound meets a callout and signs nothing. Your estimator checks every quote and a qualified quality person signs every certification. Defense and aerospace prints never enter the test, and this page gives no legal or engineering advice.
Priced per job. You get a range before the proof of concept and a fixed price before you sign.
Rob gives the range on the call, once he knows how many RFQs your estimators see in a month and how many come without a print.
// Questions
Quoting questions
Can it quote a part from a sample with no drawing?
Will it choose compression, transfer or injection molding?
Does it price the mold or the die?
Our prints cite RMA tolerances and sometimes ISO. Is that a problem?
Can it work out what compound an old part is made of?
Does it matter what quoting software we use?

Rob Eason, founder
// Book a proof of concept call
Test it on last quarter's RFQs.
Thirty minutes with Rob: your shop, your role, the job to test and roughly how many RFQs reach your estimators in a month. Hold prints and spec sheets back until the NDA is signed.
- Co-owned a 60-employee financial services firm and sold his share to his partner.
- Ran GOSO Technologies, a Boston solar company rated 5/5 across 24 Google reviews.
- 5/5 across 83 reviews in HighLevel's Certified Admin Directory.
- 4.3/5 from 6 Google reviews of Massmarket AI.
- Every directory and Google review, critical ones included, is shown word for word at massmarket.ai/reviews.
- Takes every proof-of-concept call himself.
