Product Overview
Our twist off metal bottle caps are classic vacuum sealing tinplate lids specially matched for glass food jars, widely used for honey, jam, pickles, canned fruits, nut butter, sauces and preserved food packaging. We have complete specifications from 30# to 82#, available in gold, black, white mainstream colors, and customizable surface decals including plaid, wood grain, solid color printing. Adopting food-grade white sealing liner inside, it forms vacuum seal after high-temperature sterilization, featuring excellent leak-proof, acid-resistant and grease-proof performance. Produced by professional Chinese packaging factory, one-stop customized service covering size, color, pattern, logo printing is provided. Bulk wholesale for global food factories, packaging distributors and cross-border food sellers, free sample available with buyer responsible for shipping cost.
Core Selling Points
Full Size Range: 30# / 38# / 43# / 48# / 53# / 63# / 70# / 82# 8 standard calibers, perfectly fit most round glass food jars
Multiple Optional Colors & Patterns: Glossy gold, matte black, milky white in stock; custom plaid, wood grain, solid color artwork printing supported
Food-Grade Sealing Liner: Built-in safe white gasket, forms vacuum seal after autoclaving, long-term fresh-keeping for acidic & oily food
Tinplate Raw Material: High-hardness tinplate metal, anti-rust, pressure-resistant, not easy to deform during transportation
Twist-off Thread Design: Standard sealing thread structure, convenient manual opening & tightening, compatible with automatic capping machines
Acid & Grease Resistant: Ideal for pickles, fruit jam, chili sauce, honey and all acidic/oily preserved foods
Rich Customization: Surface printing, embossed logo, exclusive pattern design, customized thickness acceptable
Vacuum Fresh-Keeping Function: Negative pressure inside jar after sterilization, effectively prevent food deterioration and mildew
Factory Direct Supply: Stable mass production capacity, competitive wholesale price, flexible MOQ for trial orders
One-Stop Service: Size selection, artwork design, production, export packaging, logistics whole-process support
Product Structure Analysis
- Outer Metal Shell: Premium tinplate material, glossy coating surface, scratch-resistant and anti-rust; various decorative printing can be done on the top surface.
- Sealing Thread Ring: Precision rolled spiral thread, closely engaged with jar mouth thread to ensure tight closure.
- Inner Food-Grade Liner: White elastic sealing gasket inside the lid core, the core component for leak-proof and vacuum sealing.
- Curled Edge: Hemmed edge workmanship without sharp burrs, safe to touch and not scratch hands during opening.
- Thickness Standard: Main body thickness 0.16mm~0.17mm, moderate hardness, durable and easy to twist open.
Usage Installation Steps
- Select the corresponding size lid according to the inner diameter of your glass jar mouth.
- Fill food into the jar, reserve appropriate headspace, wipe clean the jar mouth without food residue.
- Cover the metal lid on the jar mouth, rotate clockwise to screw it loosely.
- Put the jars into high-temperature sterilization pot for heating sterilization; after cooling down, negative pressure will be formed inside the jar to complete vacuum sealing automatically.
- When opening: Hold the lid and rotate counterclockwise, the vacuum sound will pop first, then the lid can be opened easily.
- Large-scale production: Can be matched with automatic vacuum capping equipment for efficient assembly.
Custom Parameter Table
| Item | Detailed Specifications |
|---|
| Product Name | Twist Off Tinplate Metal Jar Caps for Food Glass Jars |
| Available Sizes | 30#, 38#, 43#, 48#, 53#, 63#, 70#, 82# |
| Raw Material | Food Grade Tinplate Metal |
| Standard Dimensions (Unit: mm) | Refer to specification chart below |
| In-Stock Colors | Bright Gold, Glossy Black, Off White |
| Custom Patterns | Red Plaid, Wood Grain, Custom Pantone Solid Color, Brand Logo Printing |
| Inner Accessory | Food Grade PE Sealing Liner (Standard Equipped) |
| Lid Thickness | 0.16mm / 0.17mm |
| Key Performance | Vacuum Sealing, Leak-proof, Acid Resistant, Grease Resistant |
| Sample Service | Free Samples, Buyer Pays International Freight |
| Packing Method | Export Plastic Bag + 5-Layer Reinforced Corrugated Carton |
| Matching Container | Glass honey jars, jam jars, pickle jars, sauce cans, nut butter jars
|
Detailed Size Specification Chart (mm)
| SPEC No. | Inner Diameter | Outer Diameter | Lid Height | Material Thickness |
|---|
| 30# | 28.60 | 33.55 | 12.65 | 0.17 |
| 38# | 37.10 | 42.05 | 9.65 | 0.16 |
| 43# | 40.40 | 44.75 | 8.60 | 0.16 |
| 48# | 45.50 | 49.85 | 8.60 | 0.16 |
| 53# | 51.90 | 56.35 | 9.70 | 0.16 |
| 63# | 62.05 | 66.35 | 9.70 | 0.16 |
| 70# | 68.95 | 73.25 | 9.70 | 0.16 |
| 82# | 80.75 | 85.05 | 10.90 | 0.16 |
Applicable Scenarios
- Homemade Preserved Food Packaging: Honey, fruit jam, strawberry jam, blueberry jam, peanut butter, almond butter
- Seasoning Sauce Packaging: Chili sauce, garlic sauce, oyster sauce, vinegar, soybean paste, curry paste
- Pickled Food Canning: Pickled vegetables, pickled cucumbers, preserved fruits, olives, canned mushrooms
- Canned Snack Food: Dried fruits, nuts, candied fruit, homemade canned fruits
- Handmade Cosmetic Storage: Solid balm, body butter, homemade cream small glass jar sealing
- **Cross-Border E-Commerce Packaging Supplies: Food packaging accessories sold to European, American, Southeast Asian markets
Our Factory Strength
We are a professional tinplate metal lid manufacturer with more than 15 years of packaging production experience, focusing on vacuum twist-off caps for food glass containers:
- Full automatic stamping, curling, coating production lines, daily output over 2 million lids, on-time delivery for large bulk orders
- Strict food safety raw material inspection, all materials comply with EU LFGB & US FDA food contact standards
- Independent printing workshop, support CMYK full-color printing, custom artwork development for brand clients
- 4 times sealing vacuum test before delivery, zero leakage defective rate guaranteed
- Rich export experience, carton packaging optimized for long-distance sea transportation to avoid extrusion deformation and rust
- Multilingual sales team online 24 hours, fast quotation and customized scheme reply
Packaging & Sea Freight Specification
| Item | Details |
|---|
| Inner Packing | Classified by size, color, packed into PE moisture-proof plastic bags separately |
| Outer Packing | 5-layer thickened export corrugated carton, attached moisture-proof & fragile labels |
| Shipping Ways | Sea Freight, Air Freight, International Express |
| After-sales Logistics Guarantee | Damaged, rusted goods caused by transportation will be reissued free of charge |
Advantages of Choosing Us
- Factory direct selling without middlemen, lower wholesale price, tiered discount for large orders
- All 8 sizes in permanent stock, support mixed size & mixed color batch delivery
- Food-grade safe accessories, can provide official material inspection reports for customs clearance
- Highly flexible customization: color, pattern, logo, lid thickness all adjustable as your demand
- Stable quality & perfect after-sales service, timely solve size matching, printing and quality problems for overseas buyers
Please tell us your required size, quantity, preferred color & customized printing demands, we will send you detailed price list, packing details and arrange free physical samples for you right away!
Get Your Custom Wholesale Quotation Now
FAQ
1,How can we know these are really lead free and food grade?
As usual for glass we have common material , high white material, crystal white material, all these material are suitable for food
grade and lead free, we pass food grade test,no need to worry safety.
2, How can I get a sample to check your quality? Do you offer free sample?
-- Yes, free samples are available,direct trade assurance order is allowed. Only freight cost is on your side which will be
refundable once the order was placed. Or if you have a courier account, we can arrange samples by collected.
3,How about the Safe package and defective and broken questions?
-- For small order or samples, we all use bubble bags or foam to pack one by one, so far customers who placed small orders have
not yet feedback about the damaged problem.
--For large quantity of container order, we support the standard export pallet package or paper carton with safe egg packing. Also
we accept customized gift box.
--Other accessories like caps will put in another carton to avoid hitting. We will guarantee the broken rate under 0.2%.
--We will compensate the defective and broken bottles by your next order freely.
4,What surface handing could you support? Shall we do our logo on it?
--Sure, we can do the logo as you need and support decoration firing ,screen printing, hot stamping, frost, label printing etc.
--About printing color: it can be made according to PANTONE color number.
5, How about the sealing?
For glass jar, we have glass lids, plastic caps, metal caps and ect ,all these kinds of lids will be matched with the jar
perfectly and sealing very well. There is a small strip of rubber under the lid where the glass hits the lid. They seal pretty
well.Food-grade rubber in line with EU export standards,the lids are very easy to screw on and off. Just one twist for on and one
for off.
6,What about the lead time?
samples will be send within 12-24hours after we receive your payment;
small orders will be delivery within 7-10 days after we receive your payment.
large quantity orders will be delivery with 20-25days.
7,What is your payment?
For sample or trial order,we accept Paypal,western union and trade assurance.
For larger orders,T/T or L/C or trade assurance will be acceptable.
8,What's your shipping terms?
For samples or trial order,FEDEX,DHL,UPS ,TNT,ARAMEX can be provided.
For larger orders,delivery by air or sea or rail accord to your requirements, we will try to help you to choose the best way depending your actual situation.
