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14+ years of experience in manufacturing kitchen appliances, is a professional food vacuum sealer manufacturer.
How to Judge High-Quality Vacuum Sealer Body Material | ABS Guide?
2026-06-01
How to Judge High-Quality Vacuum Sealer Body Material | ABS Guide?
The body material of a vacuum sealer directly affects safety, durability, cleaning convenience and price. ABS engineering plastic is widely used for household and light commercial models, while 304 stainless steel is the mainstream for heavy-duty commercial machines. This guide teaches you how to distinguish good and poor-quality ABS materials, avoid pitfalls, and choose between ABS and stainless steel.
1. Understand ABS: The Mainstream Material for Household Vacuum Sealers
ABS (Acrylonitrile Butadiene Styrene) is a common engineering plastic for kitchen small appliances. It has distinct advantages and limitations.
✅ Advantages: Lightweight, drop-resistant, high toughness, easy to mold, smooth surface for easy cleaning, good electrical insulation and cost-effective.
❌ Disadvantages: Average heat resistance (prone to softening when exposed to temperature above 70°C for a long time), easy to fade and age under long-term UV radiation, and vulnerable to strong solvents.
Applicable Scenarios: Daily household use or light commercial use (less than 30 sealing cycles per day), suitable for dry and wet food. ABS is adopted for outer casing and control panel. The food contact chamber is recommended to use 304 stainless steel paired with food-grade silicone.
2. 5 Practical Steps to Check ABS Quality
2.1 Appearance Check: Texture, Gloss & Workmanship
High-quality ABS: Matte or fine frosted surface with even color, no burrs or sink marks, tight joints and firm fasteners. The surface is scratch-resistant and will not leave marks when scratched gently with nails.
Low-quality ABS: Cheap shiny surface, uneven color, excessive burrs, wide gaps between parts, easy to get scratched and turn yellow after long use.
2.2 Odor Test: No Unpleasant Smell During Operation
High-quality ABS: Almost odorless for new units. Only slight normal heat smell during sealing, no pungent plastic or sour odor. Compliant with food contact standard GB4806.
Low-quality ABS: Strong pungent plastic or sour smell, which gets worse when heated. It may contain recycled materials or harmful additives, posing risks for food contact.
2.3 Texture Test: Hardness, Toughness & Wall Thickness
High-quality ABS: Flexible and solid when pressed, uniform wall thickness (≥2mm), reinforced corners, not easy to crack after accidental drops.
Low-quality ABS: Soft and fragile, easy to dent under pressure, thin corners, prone to cracking when falling.
2.4 Certification Check: Food Grade & Safety Standards
Mandatory Standard: GB4806.7-2016 for plastic materials and products in food contact.
Preferred Certifications: FDA (USA), LFGB (Germany), essential for export products.
Warning Signs: Products without relevant certifications, vague parameter descriptions, only marked as "eco-friendly plastic" without clear ABS or food-grade labels.
2.5 Heat Resistance & Stability Test
High-quality ABS: After 20 consecutive sealing cycles, the outer casing temperature stays below 50°C, no deformation or softening.
Low-quality ABS: Gets overheated after only 10 cycles, with deformed panels, loose fasteners and air leakage.
3. ABS VS Stainless Steel: Make the Right Choice
ABS Casing (Household & Light Commercial Use)
Best for: Family daily use, occasional commercial use, budget buyers and users who prefer lightweight devices.
Key Reminder: Never use ABS for the vacuum chamber that touches food; 304 stainless steel is a must. Sealing strips shall be made of food-grade silicone with FDA/LFGB certification.
304 Stainless Steel Casing (Heavy Commercial & Frequent Household Use)
Best for: Over 50 sealing cycles per day, working environments with marinated food, sauces and seafood (high humidity and salinity), long-term service (5-10 years), and users pursuing maximum safety and durability.
Advantages: High temperature resistance, corrosion resistance, easy disinfection, no deformation or rust, fully food-safe.
Disadvantages: Heavier weight, higher cost and relatively single design.
4. Golden Rules for Purchasing ABS Vacuum Sealers
1. Outer casing in ABS, vacuum chamber in 304 stainless steel to prioritize food safety.
2. Select ABS certified to food-grade standard GB4806; stay away from recycled materials and uncertified products.
3. Ensure wall thickness ≥2mm, reinforced corners, firm fasteners, odorless, scratch and deformation resistant.
4. The machine keeps stable without overheating, deformation or air leakage after 20 consecutive sealing operations.
5. Choose ABS casing with stainless steel inner chamber for limited budget; opt for full 304 stainless steel for heavy commercial use.
5. Clarify Common Misconceptions
❌ Myth 1: All-plastic devices are unsafe
Food-grade ABS combined with stainless steel inner chamber is completely safe for household use.
❌ Myth 2: Stainless steel is always better than ABS
ABS is lighter, more affordable and fully functional for home use. Stainless steel is only necessary for high-frequency commercial scenarios.
❌ Myth 3: ABS cannot be used with hot food
Premium ABS can withstand temperature up to 70°C. As long as hot food is packed inside vacuum bags without direct contact with the casing, there is no risk.
Disadvantages: Heavier weight, higher cost and relatively single design.
4. Golden Rules for Purchasing ABS Vacuum Sealers
1. Outer casing in ABS, vacuum chamber in 304 stainless steel to prioritize food safety.
2. Select ABS certified to food-grade standard GB4806; stay away from recycled materials and uncertified products.
3. Ensure wall thickness ≥2mm, reinforced corners, firm fasteners, odorless, scratch and deformation resistant.
4. The machine keeps stable without overheating, deformation or air leakage after 20 consecutive sealing operations.
5. Choose ABS casing with stainless steel inner chamber for limited budget; opt for full 304 stainless steel for heavy commercial use.
5. Clarify Common Misconceptions
❌ Myth 1: All-plastic devices are unsafe
Food-grade ABS combined with stainless steel inner chamber is completely safe for household use.
❌ Myth 2: Stainless steel is always better than ABS
ABS is lighter, more affordable and fully functional for home use. Stainless steel is only necessary for high-frequency commercial scenarios.
❌ Myth 3: ABS cannot be used with hot food
Premium ABS can withstand temperature up to 70°C. As long as hot food is packed inside vacuum bags without direct contact with the casing, there is no risk.
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