How to Choose the Right Shore A Hardness for Silicone Pet Toys？

2026-01-02

Contents

A Scientific & Manufacturing Guide for Global B2B Buyers

As the global pet industry continues to grow, silicone pet toys have become a preferred alternative to traditional rubber and plastic products. Their advantages are clear:
non-toxic, durable, flexible, easy to clean, and highly customizable.

However, for many international buyers and brand owners, one critical factor is often underestimated:

How do you choose the correct Shore A hardness for silicone pet toys?

At LYA Silicone, a professional manufacturer specializing in liquid silicone rubber (LSR) and solid silicone molding, we help global clients design safer, longer-lasting, and market-ready pet toys by selecting the right material hardness based on science, pet behavior, and real production data.

What Is Shore A Hardness?

Shore A is an internationally recognized scale used to measure the hardness of elastomeric materials such as silicone and rubber.

Governed by ASTM D2240 and ISO 7619-1
Measured by the resistance of the material to indentation
Widely used in medical, automotive, food-contact, and pet products

📌 Lower Shore A = Softer & more flexible
📌 Higher Shore A = Harder & more wear-resistant

Why Shore A Matters in Silicone Pet Toys

Choosing the wrong hardness can lead to:

Gum or tooth damage
Products being chewed through too quickly
Increased choking or ingestion risk
Higher return and complaint rates
Compliance issues on Amazon, Chewy, and EU/US markets

From a manufacturing standpoint, Shore A also impacts:

Tear resistance
Compression set
Fatigue life
Mold design and wall thickness

Recommended Shore A Ranges for Silicone Pet Toys

Shore A 20–30 | Ultra-Soft Silicone

Material Characteristics

Extremely flexible and gentle
Low resistance to deformation
Lower tear strength

Typical Applications

Puppy and kitten teething toys
Licking mats
Comfort and calming toys

Shore A 30–50 | Industry Standard & Best Balance ⭐

This is the most commonly used hardness range for silicone pet toys worldwide.

Key Advantages

Soft yet resilient
Excellent rebound and elasticity
Strong tear resistance
Safe for teeth and gums

Common Products

Silicone chew toys
Treat-dispensing toys
Interactive feeding toys
Flexible silicone frisbees

Shore A 50–70 | Heavy-Duty Chew Resistance

Material Characteristics

Increased stiffness
High resistance to biting and cutting
Longer service life

Ideal For

Medium to large dogs
Strong chewers
Long-term durability-focused products

Shore A 70+ | Not Recommended for Chew Toys

This hardness is typically used for:

Industrial seals
Mechanical components

❌ Not suitable for pet chewing applications due to potential dental impact.

Scientific Basis: Safety vs. Durability

Material Science Perspective

Higher Shore A → higher elastic modulus → increased bite force feedback
Lower Shore A → lower tear resistance → higher risk of damage

Canine Dental Studies

Puppy teeth are not fully mineralized
Adult dogs can exert 200–450 PSI bite force
Excessive hardness increases tooth wear and fracture risk

Shore A Alone Is Not Enough

Many suppliers simply quote a Shore A number.
However, Shore A does not tell the full story.

Other critical performance factors include:

Silicone formulation quality (VMQ / LSR grade)
Tear strength additives
Mold structure and wall thickness
Injection or compression molding process
Compliance with FDA, LFGB, and food-contact standards

LYA Silicone: Custom Silicone Pet Toy Manufacturing

We provide end-to-end solutions for global pet brands:

🐾 Custom silicone pet toys (Shore A 20–70)
🧪 Food-grade & LFGB-certified silicone
🔧 Liquid silicone rubber (LSR) & solid silicone molding
🧩 Multi-hardness overmolding solutions
🏭 In-house tooling & mass production
📦 OEM / ODM / private label support

FAQ – Silicone Pet Toy Hardness

Q1: Does silicone color affect Shore A hardness?
A: High-quality pigments should not. Low-grade colorants may alter mechanical properties. We use certified food-grade color systems to ensure consistency.

Q2: Can one design be produced in multiple hardness options?
A: Yes. We support multiple Shore A variants using the same mold or multi-hardness overmolding.

Q3: Is LSR better than solid silicone for pet toys?
A: LSR offers better consistency, cleaner molding, and tighter hardness tolerances—ideal for premium pet products.

Q4: Can you recommend hardness based on dog size or breed?
A: Absolutely. We tailor hardness recommendations based on target pet size, chewing behavior, and market positioning.

Q5: What is your minimum order quantity (MOQ)?
A: MOQ depends on product design and tooling. Please contact us via our website for a customized quote.