OnCore · Golf Balls & Equipment
OnCore Mix used golf balls - Foundgolfballs.com 5A/4A Mix (10 Dozen)
Used golf balls, lower PFAS concern; no known surface treatments detected.
OnCore Mix golf balls are primarily urethane and synthetic rubber without disclosed water-repellent or stain-resistant coatings. Brand makes no PFAS claims; used condition may reduce residual risk.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Urethane/synthetic rubber core and cover
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Microplastic or particle shedding
Used golf balls do shed fine particulates from surface scuffs and wear over time; this is cosmetic degradation rather than a chemical hazard. Inhalation risk is negligible during outdoor play; concern would only apply in long-term indoor industrial handling scenarios not relevant to consumer use.
Degradation of cover integrity and water ingress
5A/4A used balls may have minor surface damage that, if deep enough, can allow water penetration into the core over extended play. This affects performance and durability, not chemical safety; water ingress does not liberate toxic compounds from urethane or rubber.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Volatile organic compound (VOC) off-gassing from urethane manufacturing
Used balls have completed the primary cure and off-gassing phase that occurs in the factory and shortly after production. No evidence of VOC release from aged urethane golf balls in normal storage or use conditions.
Heavy metals
Urethane and synthetic rubber formulations used in golf balls are not known to contain lead, cadmium, or other heavy metals at levels of concern. No recalls or safety alerts exist for OnCore or comparable brands on this hazard.
Source, FDA ↗Skin contact irritation or sensitization
Urethane and synthetic rubber are non-irritant materials under normal skin contact. Handling used golf balls during play or practice poses no documented dermal hazard.
The full breakdown
What it's made of and why it matters
OnCore Mix balls use a urethane cover over a synthetic rubber core, a standard construction in modern golf balls. Urethane is chemically inert under normal conditions (room temperature, typical outdoor use) and does not leach into skin or sweat during handling or play. The 5A/4A grade designation refers to cosmetic quality (minor scuffs, discoloration) rather than structural integrity; used balls of this grade retain full material stability.
The brand's record and disclosure
OnCore is a smaller golf equipment manufacturer without documented public safety disclosures or recalls related to ball composition. No established safety controversies or certifications specific to the brand are on record. The reseller (Foundgolfballs.com) is a secondary market vendor; accountability rests with OnCore for material sourcing and manufacturing standards.
How it compares in its category
Used golf balls carry inherently lower chemical risk than new balls because any volatile organic compounds (VOCs) from manufacturing cure processes have already off-gassed over time and use. This product occupies the same material-safety baseline as all synthetic-core, urethane-cover balls; no formulation specificity distinguishes OnCore as higher or lower risk within its class.
If you buy it
Store balls at room temperature in a dry location; no special handling is required. Wash with mild soap and water if desired; urethane is durable and does not degrade from water or sunlight at normal rates. Do not deliberately incinerate or expose to extreme heat (above 130 degrees Fahrenheit sustained) as a precaution, though normal play and storage present no risk. Inspect for large cracks or separation before use, though cosmetic wear does not affect safety.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- OnCore has made none
Formulations change between production runs, so check the current label. How we grade.
More golf balls & equipment grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.