Better Pricing. Better Lead Times. Better Experience.
Discover why industry leaders are switching to Harman Corporation for custom component molding solutions. From plastic end caps to vinyl caps and plugs, compare our options to competitors and see the Harman difference.
- Shorter Turnaround Times
- Made in USA Since 1961
- Fulfills Bulk Orders Efficiently
- Any Size Shape or Color
- Free Quotes on Orders $50+
- All Parts Made to Order
Get Your Free Custom Quote
No Obligation • Ready in 24 Hrs • Competitive Pricing
The Harman Advantage
Learn why leading companies and manufacturers are switching to Harman for plastic caps and plugs, from small 1000-piece orders to ongoing bulk shipments.
Highest Quality
Our caps and plugs consistently outperform competitors in durability and precision.
Rapid Turnaround
Faster turnaround times with expedited molding options for plastic and vinyl caps.
Faster Delivery
Our streamlined USA-based production process delivers custom molded parts faster.
Made in America
All products designed, engineered and manufactured
in the USA since 1961
Streamline Production with USA Based Manufacturing
Fulfill Time-Sensitive Bulk Orders More Efficiently, Every Time
- Made in USA Since 1961
- Accepts All Major Cards
- Expedited Order Options
- Satisfaction Guaranteed
Tailored Solutions Designed to Give You A Competitive Advantage
Since 1961, Harman Corp has been molding ideas into reality for industries that demand precision, quality, and reliability. From plastic protective caps to vinyl end caps, we deliver custom-tailored solutions for a wide variety of industry needs.
Custom Molding Options without High Costs
Over 60 Years of Affordable Prices Without Sacrificing Quality
Is a custom plastic cap or vinyl plug the perfect solution for your application needs? Ordering "custom" parts has a reputation for being expensive and time-consuming.
However, it doesn't have to be! Harman Corporation specializes in molding custom components at competitive prices with reliable, on-time delivery.
Get Free Custom QuoteMolding Solutions for Top Industry Leaders
Expertly Designed & Engineered for Industrial Applications
Plastic Round Caps
Plastic Square Caps
Plastic Rectangular Caps
Plastic Square Tubing Plugs
Plastic Round Tubing Plugs
Plastic Rectangular Tubing Plugs
Plastic Round Hanger Caps
Plastic Anti-Roll Caps
Plastic Hex Caps
Plastic Flush Style Plugs
Plastic Recessed Style Plugs
Plastic Tapered Cap Plugs
Plastic Domed Tubing Plugs
Plastic HP Series Plugs
Frequently Asked Questions
Does Harman offer custom product capabilities?
+ -Harman Corp offers more than 50 years of experience providing custom dip molding design and manufacturing, offering unique and functional parts that meet our customers needs. We offer low tooling costs, short lead times on all of our Custom Dip products - all of which are made in USA.
Read more about our Custom Dip Molding services.
How long does Harman take to make custom products?
+ -Turnaround times for most custom parts are 7-10 business days. To ensure customers get their custom caps or plugs turned around quickly as possible, we also offer expedited molding, upon request.
What’s the minimum order quantity on custom products?
+ -In order to place a custom order, we require a minimum of 1,000 parts per order. There is no max order quantity.
Does Harman offer any other services?
+ -We offer the following secondary services on all plastic caps, plastic plugs and plastic grips:
How many standard colors does Harman offer?
+ -Our plastic caps, plastic plugs and plastic grips come in the following eight standard colors: Black, Gray, Blue, Green, Yellow, Orange, Red and White.
Learn more about Harman‘s Vinyl Dip Molding colors.
Can Harman Corp color match?
+ -Yes, Harman Corp can match most colors our customers provide.
Learn more about Harman‘s Vinyl Dip Molding colors.
What Materials does Harman use to produce products?
+ -At Harman Corp, the majority of our plastic caps, plastic grips and plastic plugs are made with silicone or flexible vinyl PVC plastic.
How many sizes does Harman offer on products?
+ -Any size, any length. No matter how custom the job, we can create a part that matches your specific requirements.
What are Harman’s payment terms?
+ -Harman accepts Net 30 and all major credit cards.
Where do Harman’s products ship from?
+ -When you order from Harman Corporation, our products ship from Rochester, MI.
Which shipping carriers does Harman use?
+ -Harman uses UPS and FedEx for ground shipments. Check the map below to see how many business days your ground order will be in transit.
Get Free Custom Quote and Competitor Comparison
Fill out the form to receive a detailed comparison between Harman and your current supplier. Our team will analyze your needs and provide a custom solution that outperforms the competition.
- Free competitor cost comparison analysis
- Free custom quotes within 24 hours
- No-obligation consultation with our experts