SR PLASTICS COMPANY, LLC

What SR PLASTICS COMPANY, LLC does

SR Plastics Company, LLC is a Southern California-based precision plastic injection molder founded in 1974 and headquartered in Norco, CA. The company designs and manufactures custom injection molded plastic and thermoplastic elastomer (TPR/TPU) components for five primary verticals: aerospace, industrial pump and fluid management, fuel management systems, medical, and the music industry. It operates 32 injection molding machines spanning 50 to 1,000 tons of clamp force, with shot sizes from 0.24 oz to 132 oz, and supports 12 automated molding cells. Production capacity disclosures indicate 700,000+ assemblies annually in general work, ~1,000,000 assemblies/year in aerospace, and 1.2 million precision products/year for the music industry.

The company's technical offering centers on a unified manufacturing platform combining primary injection molding with in-house secondary operations (sonic welding, overmolding, hot stamping, pad printing, and CNC machining via a sister-company relationship with SR Machining), plus specialty capabilities including white room molding for cleanliness-sensitive applications, Class 101 custom mold building rated for 1,000,000+ production cycles, and proprietary thermal-formed PTFE diaphragms for air-operated double-diaphragm (AODD) pumps validated at 12+ million flexural cycles. Quality systems are ABS-certified to AS9100 and ISO 9001, enabling entry into aerospace and regulated industrial supply chains.

SR Plastics operates a sales-led, project-based business model. Pricing is quote-based per project, with no published price list; revenue derives from one-time custom molding engagements and multi-year contracts, supplemented by vendor-managed inventory (VMI) services. The company markets primarily through its own website with Request a Quote CTAs, industry- and location-specific landing pages, and a LinkedIn presence, with no reseller or marketplace channels. Customers are served nationwide from the Norco headquarters, with no disclosed parent company, institutional investors, or M&A activity in the available data.

Name

SR PLASTICS COMPANY, LLC

Legal name

SR Plastics Company, LLC

Website

https://srplasticsmolding.com

Company type

Private

Founded year

1974

Operating status

Operating

Headcount range

1–10 employees

Short description

SR Plastics Company, LLC is a Southern California precision injection molder founded in 1974, operating 32 molding machines (50-1,000 ton) to produce custom engineered plastic and elastomer components for aerospace, industrial pump, fuel management, medical, and music industry customers, supported by in-house secondary operations and AS9100/ISO 9001 certifications.

Ownership category

akta.pro rank

Product category

Custom Plastic Injection Molding

NAICS

All Other Plastics Product Manufacturing (326199), Other Plastics Product Manufacturing (32619), Plastics Product Manufacturing (3261), Industrial Mold Manufacturing (333511)

SIC

Miscellaneous Plastics Products (3080), Plastics Products, Nec (3089)

akta.pro primary industry

Custom Injection Molding & Contract Manufacturing (Job Shops/CMs) (IMANAFAJ)

akta.pro secondary industries

Medical & Life Sciences Injection Molding (Devices, Diagnostics, Cleanroom) (IMANAFAC), Automotive & Transportation Injection Molded Parts (IMANAFAB), Insert & Overmolding (Metal/Plastic, Multi-Material) (IMANAFAI), Industrial & Machinery Injection Molded Components (Gears, Wear Parts) (IMANAFAF)

Keywords

• Plastic injection molding
• Precision molded components
• Custom mold building
• Thermoplastic elastomer molding
• Secondary plastic operations

Headquarters

HQ city

Norco

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales

Revenue model

1. Custom Injection Molding Services: SR Plastics generates revenue through custom plastic injection molding projects, offering precision components from prototype to high-volume production. Services include tooling design, production, secondary operations, and assembly. The company operates on a project/job-based model with quotes provided based on customer specifications.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

SR Plastics designs and manufactures precision plastic injection molded components and thermoplastic rubber products using 32 injection molding machines ranging from 50 to 1000 tons. The company provides end-to-end capabilities including engineering, custom mold building, white room molding, secondary operations (sonic welding, overmolding, hot stamping, pad printing, CNC machining), quality inspection, and vendor-managed inventory, serving customers from prototype through high-volume production.

Product overview

SR Plastics is a precision plastic injection molding manufacturer offering a unified service platform centered on custom injection molding with 32 machines (50-1000 tons). The core offering includes injection molding services supplemented by white room molding, tooling transfers, and custom mold building. Secondary operations (overmolding, hot stamping, sonic welding, PAD printing, plastics machining) and specialty PTFE diaphragms extend the portfolio. Material services cover major engineering plastics including ABS, Nylon, HDPE, PEEK, Polycarbonate, TPU, and Acrylic. Quality inspection and vendor-managed inventory services support the manufacturing operations. The company operates as a single integrated platform rather than modular products, with SR Machining as a sister company providing complementary CNC machining.

Differentiator

Problem solved

Functional benefit

Products and services

• Custom Plastic Injection Molding Services Precision plastic injection molding services utilizing 32 machines ranging from 50 to 1000 tons, supporting prototype to high-volume production runs up to 700,000+ assemblies annually for industrial customers.
• White Room Molding
• Tooling Transfers
• Custom Mold Building
• Overmolding
• Hot Stamping
• Sonic Welding
• PAD Printing
• Plastics Machining & Assemblies
• PTFE Diaphragms
• ABS Injection Molding
• Nylon Injection Molding
• HDPE Injection Molding
• PEEK Injection Molding
• Polycarbonate Injection Molding
• TPU Injection Molding
• Acrylic/PMMA Injection Molding
• Quality Inspection Services
• Vendor-Managed Inventory (VMI)

Quantifiable outcome

• Production capacity of 700,000 to 1,000,000+ assemblies annually
• +3 more outcomes

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• SR MachiningcoreTechnology or IntegrationSR Machining is described as a 'sister company' providing integrated manufacturing solutions. The partnership enables production of injection-molded parts with critical machined features, as well as final assemblies requiring both injection molding and CNC machining disciplines. This collaboration provides simplified sourcing, consistent quality, and greater project efficiency from prototype to production through a single supplier.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Mack Molding: Vertically integrated custom injection molder offering molding, tooling, machining, and assembly for industrial and medical customers, structurally similar to SR Plastics' full-service contract manufacturing positioning.
• EVCO Plastics: Large US-based custom injection molder offering contract manufacturing across industrial, medical, and consumer end markets, with a comparable mix of in-house tooling, secondary operations, and engineering support.
• Plastek Industries: Custom injection molder and contract manufacturer serving personal care, packaging, and industrial customers with in-house mold design, tool building, and assembly capabilities.
• Plastic Molded Concepts (PMC): Custom injection molder and contract manufacturer with in-house tooling, secondary operations, and assembly for industrial and consumer customers, overlapping closely with SR Plastics' service stack.
• C&J Industries: Custom injection molder and contract manufacturer serving industrial, aerospace, and medical customers with in-house mold building, assembly, and quality services — closely mirroring SR Plastics' integrated service model.
• Rogan Corporation: Custom injection molder focused on engineered plastics and tight-tolerance components for industrial and medical markets, with comparable in-house tooling and secondary operations.
• Protolabs: Digital and automated custom injection molder serving industrial, medical, and aerospace customers with rapid prototyping through production runs, a key competitor for short-to-medium volume precision molding work.
• PTI Engineered Plastics: Custom injection molder specializing in engineered thermoplastics for medical, industrial, and aerospace applications — a direct adjacency to SR Plastics' engineering-resin and aerospace-certified positioning.
• Tessy Plastics: US-based custom injection molder serving medical, industrial, and consumer products with integrated tooling, assembly, and high-volume production — comparable scale and vertical mix to SR Plastics.
• MGS Mfg. Group (formerly Phillips Plastics): Large custom injection molder with full-service tooling, molding, and assembly capabilities across automotive, medical, and industrial markets, comparable to SR Plastics in vertical breadth and in-house integration.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sr-plastics-company-llc

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SR PLASTICS COMPANY, LLC