13mm Aluminum Tear Off Seal
13mm aluminum – plastic Flip off tear off caps / seals: Tamper-evident crimp seal with a plastic top that enables complete hand removal of the aluminum seal.
The aluminum seal stays attached to the plastic top, allowing full removal of the aluminum portion;
designed for aluminum crimp-sealed serum vials
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Description
13mm aluminum seals wholesale · pharmaceutical tear-off caps
13mm Aluminum Tear-Off Seal · 11mm–32mm Full Range · Pharmaceutical Grade
13 mm
Aluminum
Tear-Off
Seal
Ideal for Small-Scale Lab Use
Cleanroom produced · ISO-grade · 2ml & 3ml vial compatible
11–32mm · 10 sizes · Pharma-grade cleanroom · 2ml/3ml vial fit
A pharmaceutical-grade 13 mm aluminium tear-off seal for small-format glass vials - cleanroom produced to ISO-grade standards, compatible with 2 ml and 3 ml glass vials, and available in 10 standard sizes from 11 mm to 32 mm for complete vial format coverage. The ideal choice for small-scale laboratory fill-finish, R&D batches, and compounding operations.
13mm tear-off
11–32mm · 10 sizes
2ml / 3ml vial fit
Cleanroom ISO
Wholesale · factory direct
13 mm ★
Featured size
10 sizes
11mm – 32mm
2ml / 3ml
Vial compatible
ISO grade
Cleanroom made
Price
Factory · wholesale
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13mm aluminum tear-off seal - complete specification
A pharmaceutical-grade 13 mm aluminium tear-off seal for small-format glass vials - manufactured in a cleanroom environment to ISO classification standards, compatible with standard 2 ml and 3 ml pharmaceutical glass vials, and available in 10 sizes from 11 mm to 32 mm for complete coverage of small-vial pharmaceutical formats.
technical specifications - 13mm
| featured size | 13 mm (★ most common small-vial) | Full size range | 11 · 13 · 15 · 20 · 22 · 24 · 26 · 28 · 30 · 32 mm |
| Al alloy | 8011 H16 · pharmaceutical grade | Al thickness (13mm) | 0.22 mm sheet |
| Opening type | Tear-off pull ring | Edge treatment | Anti-cut rolled edge - safe-grip |
| Tamper evidence | Score line - irreversible tear | Production standard | ISO-grade cleanroom (Class D equiv.) |
| Primary vial fit | 2 ml · 3 ml glass vials (13mm neck) | Colours | 10+ standard Pantone · custom |
| RoHS | Compliant - no Pb, Cd, Cr(VI) | CoA per lot | Alloy · dimensions · visual AQL |
Why 13mm is the key small-vial seal size
The 13 mm aluminium seal is specifically designed for the 13 mm neck opening of small pharmaceutical glass vials - the standard neck diameter for 2 ml and 3 ml tubular glass vials used in injectable pharmaceuticals, vaccine presentations, and laboratory sample vials. It is the smallest seal size that accommodates a full rubber stopper plus crimped aluminium skirt, making it the minimum seal specification for sterile pharmaceutical applications. At laboratory scale, the 13 mm seal is the dominant format for diagnostic kit vials, standard reference solution vials, and small-dose injectable preparations.
Cleanroom production - what ISO grade means
Every lot of 13 mm aluminium seals is manufactured in a controlled-environment cleanroom classified to ISO 8 equivalent (Class D in EU GMP terminology) - the minimum cleanroom classification required for pharmaceutical packaging component manufacture. The cleanroom controls airborne particulate contamination, personnel garment requirements, and surface cleaning protocols. For buyers who use 13 mm seals on sterile pharmaceutical products, cleanroom-produced seals reduce the bioburden and particulate contamination risk at filling. A cleanroom production declaration is included in the CoA per lot.
Small-scale lab use - why 13mm is the right choice
Small-scale pharmaceutical laboratories - formulation R&D, QC reference standards, stability study sample preparation, and compounding pharmacies - typically fill 2 ml and 3 ml vials in batches of 20–500 vials per session. The 13 mm tear-off seal is designed for this scale: it is applied with a standard handheld bench crimper, opened easily at the benchtop by any researcher, and provides pharmaceutical-quality tamper evidence and seal integrity without the cost or complexity of larger vial formats. The tear-off opening requires no scissors - critical in a busy laboratory environment.
Every size in our 10-size range is produced to the same pharmaceutical-grade aluminium specification - order any combination of sizes in a single enquiry for your complete vial closure programme
|
Normal Aluminum Caps Dimensions |
||||
|
Type |
d1 ( mm ) |
h1 ( mm ) |
e ( mm ) |
|
|
8mm |
7.5± 0.1 |
4.65 ± 0.1 |
0.2 |
|
|
11mm |
11.4± 0.1 |
5.1± 0.1 |
0.2 |
|
|
13mm |
13.3 ± 0.1 |
6.2 ± 0.1 |
0.2 |
|
|
15mm |
15.3 ± 0.2 |
6.5 ± 0.1 |
0.2 |
|
|
20mm |
20.2 ± 0.1 |
7.5 ± 0.1 |
0.2 |
|
|
26mm |
26.5 ± 0.1 |
8.9 ± 0.1 |
0.24 |
|
|
28mm |
27.9 ± 0.1 |
9.6 ± 0.1 |
0.24 |
|
|
30mm |
29.4 ± 0.1 |
9.8 ± 0.1 |
0.24 |
|
|
32mm |
32.2± 0.1 |
12.4 ± 0.1 |
0.24 |
|
SMALL - SCALE LAB USE
Built for the lab bench, not just the filling line
The 13 mm seal is the dominant format for small-scale pharmaceutical laboratory operations - where batch sizes are small, vials are 2–3 ml, and the seal must perform to pharmaceutical quality without industrial-scale equipment.
Formulation R&D
Small batch · 2ml / 3ml · stability study
Research formulation teams filling 2 ml vials for stability studies, analytical method development, dissolution testing, and drug product characterisation. Typical batch: 20–200 vials. The 13 mm seal applied with a handheld crimper provides GMP-quality closure without fill-line infrastructure.
Compounding & Rx dispensing
Custom injectable · small-dose · clinic
Compounding pharmacies and hospital pharmacies preparing custom injectable preparations in 2–3 ml vials for individual patients - growth hormone preparations, peptide therapeutics, ophthalmics, and specialty small-dose injectables. Colour-coded caps help distinguish preparations at point of dispensing.
Clinical trial material (IMP)
Phase I–III · dose-coded · small batch
Clinical trial supply teams filling investigational medicinal product (IMP) in 2–3 ml vials for Phase I–III studies - using colour-coded 13 mm seals to differentiate dose groups, treatment arms, or placebo without label changes. Small-batch flexibility is essential for IMP operations where batch sizes are 50–2,000 vials.
Why small-scale labs choose the 13mm tear-off over alternatives
At small-scale lab volumes (20–500 vials per batch), the 13 mm tear-off aluminium seal offers three advantages over alternative small-vial closures: (1) it is compatible with the same standard 13 mm handheld bench crimper used for production-scale 13 mm vials - no separate equipment; (2) it provides GMP-acceptable tamper evidence for any vial that may be used in a regulated stability study or clinical supply context; (3) the tear-off opening requires no scissors - reducing the sharp-instrument risk at the benchtop. For non-regulated applications, crimp seals also keep caps more reliably sealed than simple screw caps across temperature cycling in freeze-thaw experiments.
The 13 mm seal is dimensionally matched to the standard 13 mm neck OD of pharmaceutical glass vials. Here is the complete vial compatibility profile by seal size.
2 ML
2ml tubular glass
13mm seal · primary fit
Type I borosilicate 2 ml tubular glass vials - the most common small-dose injectable and reference standard vial format. 13 mm neck OD is the standard for this format worldwide. Stopper: 13 mm bromobutyl or chlorobutyl.
3 ML
3ml tubular glass
13mm seal · primary fit
Type I borosilicate 3 ml tubular glass vials - slightly taller body, same 13 mm neck as 2 ml format. Used for slightly larger small-dose injectables, vaccine presentations, and growth factor preparations. Same 13 mm seal and stopper specification as 2 ml.
5 ML
5ml standard vial
13mm or 15mm · confirm neck OD
5 ml vials may have 13 mm or 15 mm neck OD depending on manufacturer. Confirm the neck OD of your specific 5 ml vial before specifying seal size - both 13 mm and 15 mm seals are available. The 15 mm seal is more common for 5 ml formats.
other
Beyond 5ml - see size table
15mm / 20mm and above
Vials above 5 ml typically use 20 mm or wider neck seals - see the full size range table above. When in doubt, measure the vial neck OD directly or consult the vial manufacturer's drawing to confirm the correct seal size.
How to confirm the correct seal size for your vial
The correct seal size matches the vial neck outer diameter (OD) - not the vial volume. To confirm: (1) measure the neck OD of your glass vial with a calliper; (2) match to the seal size in the table above; (3) if between sizes, select the next size up and confirm crimp quality on a test run. If you have the vial manufacturer's product drawing or item number, send it to us and we will confirm the correct seal size before you order.
Pharmaceutical-grade cleanroom production
Every lot of 13 mm seals is produced in a controlled-environment cleanroom meeting pharmaceutical industry standards - the documentation your QA team needs for supplier qualification and product dossier submission.
ISO 8 cleanroom production
Class D equiv · EU GMP Annex 1
The 13 mm seal is manufactured in a cleanroom classified to ISO 8 (≤ 3,520,000 particles/m³ at ≥ 0.5 μm), equivalent to EU GMP Grade D and US FDA Class 100,000. This is the minimum classification required for pharmaceutical primary packaging component manufacture. Airborne particulate and microbioburden monitoring data are available for supplier qualification.
Lot-by-lot CoA
Al alloy · dimensions · AQL · clean
Every production lot is released with a Certificate of Analysis confirming: aluminium alloy composition (8011 H16), sheet thickness, cap outer diameter, score-line depth, visual inspection AQL result, and cleanroom production declaration. The CoA is issued per lot number for full batch traceability - available for DMF, CTD, and regulatory submission support packages.
RoHS & food-contact compliance
No Pb · No Cd · EU 1935/2004
The 8011 H16 aluminium meets EU Regulation 1935/2004 (materials in contact with food) and RoHS Directive 2011/65/EU - no lead, cadmium, hexavalent chromium, mercury, PBB, or PBDE. A full material compliance declaration is available for each lot, supporting your extractables and leachables (E&L) assessment and drug product packaging regulatory dossier.
Anti-cut edge - standard on all sizes
Rolled edge · safe-grip · all lots
The anti-cut rolled edge on the tear ring is a standard specification for all 10 sizes - not a premium option. Every seal in every lot is produced with the rolled-edge treatment as validated at tooling qualification. Opening force is verified at qualification: target 8–12 N for 13 mm (single-finger pull, standard examination glove).
Consistent lot-to-lot dimensions
Cap OD · score depth · crimp ht.
Dimension variability between lots is the most common cause of filling line rejects and seal integrity failures in pharmaceutical operations. Cap OD tolerance is ±0.15 mm; score line depth is controlled to ±0.02 mm. Dimensional CoA data is provided per lot so your incoming inspection team can verify against specification without full re-measurement.
Pharma-grade bulk packing
PE bag · sealed · lot labelled
Seals are packed in sealed polyethylene bags with lot number, production date, quantity, and cleanroom declaration printed on the bag label. Each bag is sealed inside a secondary carton. The primary PE bag prevents dust ingress and moisture exposure during storage and shipping - maintaining the cleanroom-grade cleanliness of the seals until the bag is opened at your filling station.
WHO ORDERS 13mm SEALS
From the research lab to the filling suite
The 13 mm aluminium tear-off seal is ordered wherever a pharmaceutical-grade closure is needed for 2–3 ml glass vials - at any production scale from single-researcher bench to GMP fill suite.
Pharmaceutical research labs
Formulation · stability · QC reference
Formulation scientists filling 2 ml vials for dissolution studies, stability samples, analytical reference standards, and method development. The 13 mm seal provides pharmaceutical-quality closure for regulated laboratory samples.
Compounding pharmacies
Custom injectable · small-dose
Compounding pharmacies preparing custom small-dose injectable preparations in 2–3 ml vials for individual patients or clinic dispensing. The tear-off opening requires no scissors at the preparation bench.
Biotech & biologic labs
Protein storage · sample · biobank
Biotechnology research groups and biobanks storing biological reference materials, protein samples, monoclonal antibodies, and biological assay standards in 2 ml glass vials with pharmaceutical-grade seals.
Pharma manufacturers · small format
Small-vial line · 2ml injectable
Pharmaceutical manufacturers running 13 mm small-vial filling lines for high-value small-dose injectables - growth hormone, peptides, monoclonal antibodies, and specialty biologics where the 2–3 ml format is standard.
CRO & clinical supply
IMP · Phase I–III · small-vial trial
Clinical research organisations producing investigational medicinal product (IMP) in 2–3 ml vials for Phase I–III clinical studies - requiring colour-coded seals for dose-group identification and documented lot CoA for regulatory submissions.
Wholesale distributors
13mm · all 10 sizes · B2B supply
Pharmaceutical packaging distributors stocking 13 mm seals as a core line item for laboratory and compounding pharmacy customers - alongside the full 11–32 mm range for customers requiring multiple sizes from a single supplier.
13mm ★
Featured size
11–32mm · 10 sizes total
2ml/3ml
Vial fit
Standard glass vial neck
ISO 8
Cleanroom
Class D equiv · GMP
Anti-cut
Rolled edge
All sizes · all lots
CoA
Per lot
Alloy · dims · cleanroom
13mm, 2ml, lab-ready.
All 10 sizes available.
Order 13 mm aluminium tear-off seals wholesale - or request the full size range from 11 mm to 32 mm. Specify colour, lot CoA requirement, and whether you need a compatible handheld 13 mm bench crimper. Factory direct, pharmaceutical cleanroom grade, 24-hour response.
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